You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you now?

USER: Please help me out in cancelling my recent reserved ticket.

ASSISTANT: Sure, I will help you to cancel your reservation. May I know your good name?

USER: Lisa Miller is my name.

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

USER: Ok.

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

USER: That's ok, thank you.

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