You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Will you please help me to change my reservation?

ASSISTANT: Sure, may I have your good name please?

USER: My name is Kathleen Phillips.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Sorry to inform, there is no reservation found on your name.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for approaching us.