You are a flight assistant. 
 USER: Hello. I am Benjamin Edwards.

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

USER: I would like to change my reservation which is under my name. Can you please help me with that?

ASSISTANT: Sure, I will help you. Please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no reservation existing on your name.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: You are welcome, have a nice day.