You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I'm Andrew Adams. My business meeting has been postponed. So, I would like to change my existing reservation which is under my name. Can you please help me with that?

ASSISTANT: Sure Adams, Please wait a moment.

USER: Sure.

ASSISTANT: Adams there is no reservation found for you.

USER: Ok, no problem.

ASSISTANT: Ok, thank you for reaching us.

USER: Thank you for checking. You are welcome.