You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you today?

USER: As my trip with my family was cancelled, for that I want to cancel my recent reservation. Will you be my helping hand in cancellation of a ticket?

ASSISTANT: To cancel your flight ticket.May I have your name please?

USER: Sure. I am Kevin Lee.

ASSISTANT: Please wait a minute, I will check and get back to you.

USER: Ok.

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

USER: Ok, thank you for your information.

ASSISTANT: Thank you for choosing us.