You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

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. Can you cancel my ticket?

ASSISTANT: Sure. Please let me know your name.

USER: My self Karen Wilson.

ASSISTANT: Karen, there is no reservation found with your details.

USER: Ok, it's fine no problem, thanks for your valuable time in helping us.

ASSISTANT: You are welcome.