You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you today?

USER: I want to cancel my recent reservation. Could you help me?

ASSISTANT: Sure, we are ready to help you.

USER: Thank you.

ASSISTANT: May I know your good name please?

USER: Donald Lee here.

ASSISTANT: Ok, please wait for some time.

USER: Ok.

ASSISTANT: Thanks for waiting. There is no reservation found with your provided name in our data base.

USER: That's ok, no problem, Thank you.

ASSISTANT: Thank you for reaching us, have a good day.