You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I be of your address?

USER: I am Lisa Baker. I want to cancel my recent reservation. Will you help me?

ASSISTANT: Sure, give me some time I will check and let you know.

USER: OK.

ASSISTANT: Thanks for waiting, we did n't found any reservation by this name.

USER: Thank you so much.

ASSISTANT: Thanks for approaching us, have a nice day.