You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I assist you now?

USER: I want to cancel my reservation, can you help me with that?

ASSISTANT: Sure, may I know your good name?

USER: I am William Mitchell.

ASSISTANT: Please wait for a moment, while I check for the reservation.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name in our system data.

USER: Ok, thanks for the information.

ASSISTANT: Thank you for visiting us, have a nice day ahead.