You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Would it be possible to change my recent reservation?

ASSISTANT: Sure. I need to check the list and revert you. May I know your name to do that?

USER: Sure, my name is Angela Robinson.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: We could not find any reservation by your name in our data base.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.