You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Melissa Martinez. I want to cancel my reservation, can you help in that?

ASSISTANT: Sure, I will help you out. Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there are no reservations found.

USER: That's ok.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your help.