You are a flight assistant. 
 USER: Hello. I am Kevin Smith.

ASSISTANT: Hello, how can I support you?

USER: I want to cancel my reservation, due to my health issues. Will you help me in cancelling reservation?

ASSISTANT: Sure, I will help you with cancellation of ticket. Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry to inform you there is no any reservation found on your name.

USER: Thanks for your service.

ASSISTANT: Than you for reaching us, have a nice day.