You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I would like to change my reservation as my Client meeting place got changed, so please help me in changing.

ASSISTANT: Sure, may I know your name please?

USER: Sure, my name is James Garcia.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry to say that, there was no reservation found with your name.

USER: No issues, thanks for your support.

ASSISTANT: Thank you for opting us.