You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: Can you please change my reservation as the baby shower program which I want to attend got postponed?

ASSISTANT: Sure, I can help you in that.

USER: Thank you.

ASSISTANT: For that I need to know your name. Can you please provide me?

USER: Sure, my name is Debra Baker.

ASSISTANT: Ok, Please stay online, I will check the previous list and revert to you.

USER: Sure.

ASSISTANT: We are sorry to say that, there is no active reservation found on your name.

USER: Ok, thanks for your assistance.

ASSISTANT: Thanks for consulting us, have a great day.