You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Barbara Evans.

ASSISTANT: How can I assist you at this moment?

USER: I want to make some changes in my reservation, could you please help me with that?

ASSISTANT: Sure Evans, I am ready to help you with that.

USER: Thank you.

ASSISTANT: Please wait a moment to check your reservation status.

USER: Ok, I will wait for your reply.

ASSISTANT: Sorry Barbara Evans, no reservation has found under your name to change.

USER: No problem. Anyway, thank you for checking.

ASSISTANT: Thank you for choosing us, have a good day.