You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: Can you help me to cancel my recent reservation?

ASSISTANT: Sure, may I know your name to proceed further?

USER: Sure, my name is Paul Mitchell.

ASSISTANT: OK Paul, wait a moment meanwhile I'll check the details of the reservation.

USER: OK.

ASSISTANT: Thank you for your patience, based on your request I cannot find any reservation.

USER: OK, thank you.

ASSISTANT: Thank you once again for contacting us. Have a nice day!.