You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I just want to cancel my reservation on the name of Melissa Hall, so please aid me in cancelling.

ASSISTANT: Sure, may I know your name?

USER: I have already mentioned.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: There is no reservation found with your name.

USER: No problem, thanks for your support.

ASSISTANT: Thank you.