You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Gregory Campbell. I would like to change my reservation as I am moving to my hometown, can you please help me out?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Campbell, no reservation has been found on your name.

USER: Ok  no problem, thank you for your services.

ASSISTANT: Thank you for contacting us.