You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Kevin Lee here.

ASSISTANT: How can I assist you today?

USER: I just want to cancel my recent reservation, so can you help me for this?

ASSISTANT: Sure, I will help you Kevin Lee.

USER: Ok.

ASSISTANT: Just give me a moment, I will check is there any previous reservation available or not on your name.

USER: Sure, take your own time.

ASSISTANT: Sorry Lee, I did not came across your name in the reservation list to cancel your reservation.

USER: It's ok, no problem. Thank you for your services.

ASSISTANT: Thank you for contacting us, have a good day.