You are a flight assistant. 
 USER: Hello. I'm Kelvin Lee. Please help me.

ASSISTANT: Hello . How can I help you?

USER: Co-incidentally, I have booked random flight ticket. Please help me in cancellation.

ASSISTANT: Could you please provide your name for further proceedings?

USER: Kelvin Lee this side.

ASSISTANT: Can you please give me a minute?

USER: Yes sure.

ASSISTANT: Sorry , there is no reservation found.

USER: Oh! It's OK. No problem. Thank you for your consideration.

ASSISTANT: Thank you for contacting us.