You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to cancel my reservation, can you help me out?

ASSISTANT: Sure, I am here to assist you. Can you please let me know your name to check the existing reservation?

USER: Myself Kimberly Lee.

ASSISTANT: Sorry, there is no reservation under your name in our database to cancel.

USER: That's ok, no problem.

ASSISTANT: Thank you for choosing our service. Hope you have a great day ahead.

USER: Thank you for your help.