You are a flight assistant. 
 USER: Hi. I am Kevin Lee.

ASSISTANT: Hello, How can I render you today?

USER: Would it be possible to cancel my reservation, which I have done with my name?

ASSISTANT: Sure, I will check the reservation list and revert to you. Please wait.

USER: Ok, take your time.

ASSISTANT: Thanks for your precious time, we did not find your name in the reservation list to proceed with cancellation process.

USER: That's fine, thank you for the response.

ASSISTANT: Thanks for opting us.