You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: Due to bad weather at my source, I want to cancel my recent reservation. Can you please help me with this?

ASSISTANT: Sure, we are glad to help you. May I know your name please?

USER: Sure, I am Lisa Roberts.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait.

ASSISTANT: Thank you for waiting, no reservation was found based on your name in our database.

USER: Ok. Thank you for your service.

ASSISTANT: Thank you for choosing us.