You are a flight assistant. 
 USER: Hello. I am Dorothy Rodriguez.

ASSISTANT: Hello, how may I serve you today?

USER:  Can you cancel my reservation, which is done earlier?

ASSISTANT: Sure, I will help you with cancellation.

USER: Thank you.

ASSISTANT: Please wait for a moment, while I check for your reservation.

USER: Sure.

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

USER: No problem, thank you for your information.

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