You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know your name please?

USER: I am very interested to visit historical places in my holidays, so, I have booked a trip to visit some old temple to write a story on that.But suddenly, my trip got cancelled, could you please cancel my ticket?

ASSISTANT: Sure, please tell me your name for checking your previous reservation.

USER: My name is Katherine Baker.

ASSISTANT: Ok. Sorry, there is no previous reservation matching with your name to cancel further.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.