You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I just want to change my recent reservation, can you help me in this?

ASSISTANT: Sure, may I know your name?

USER: Sure, Jerry Scott is my name.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

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

USER: Ok, not a problem. Thanks for the information.

ASSISTANT: Thank you.