You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you now?

USER: I am Ronald Lopez. I want to cancel my reservation, could you help me in the cancellation.

ASSISTANT: Sure, I will help you with that. Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name in our system data.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for visiting us, we hope see you again.