You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am Cynthia Smith, I would like to change my recent reservation, can you help me?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no reservation found on your given name.

USER: That's fine, thanks for your information anyways.

ASSISTANT: Thanks for reaching us, have a nice day.