You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I abet you today?

USER: I would like to cancel my reservation which was made on the name of Joshua Mitchell. Can you help me with it?

ASSISTANT: Sure, Could you please provide your name to check your previous reservation status?

USER: I have already mentioned it above.

ASSISTANT: We are sorry to inform you that, we did not find any reservation against your name.

USER: Thank you for the response.

ASSISTANT: Thanks for opting us.