You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: My concern is regarding the flight ticket cancellations, can you help?

ASSISTANT: Ok, may I know your name to check with your previous booking?

USER: Ok, please check for the name Betty Clark.

ASSISTANT: Please give me a momnet to check.

USER: Ok, please take your time.

ASSISTANT: Sorry to say, there is no reservation found by your name.

USER: That is ok, thank you for the help.

ASSISTANT: Thank you for choosing us. Have a nice day.