求将以下英语对话扩展，两个人各加两三句话就行了

A: You seem upset today. What's up?
B: Oh, I was too disappointed at my girlfriend.
A: What happened to you?
B: Yesterday was my birthday, and she promised to come to my home for the celebration. And she also said she would give me a surprise. But she didn't turn up last night.
A: Don't worry. Maybe she had something important to do but she didn't have time to inform you. I think you'd better ask herself to clear up.
B:I will. Thank you.
A: Em, I hope everything will be alright.

A:You seem upset today.What's up?
B:Oh,I was too disappointed at my girlfriend.
A:What happened to you?
B:Yesterday was my birthday,and she promised to come to my home for the celebration.And she also said she would give me a surprise.But she didn't turn up last night.
A:Don't worry.maybe she had something important to do but she didn't have time to inform you.I think you'd better ask herself to clear up.
B:But yesterday's birthday party was so important for me.I was waiting for her all the night.I was so disappointed at her.I think I am not important for her at all.
A:Don't think too much before you know the reason for her absent.Clam down.Then listen to her expression in peace.
B:OK.I will do as you said.
A:Good.Try to forgive her after her expression.Never break up just because of the unneccessary misunderstanding between you.
B:I will.Thank you.
A:Em,I hope everything will be alright.

case A: