You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I want to cancel my recent ticket because my trip got cancelled due to some financial issues. Could you please help me?

ASSISTANT: Sure, may I know your good name please?

USER: I am Nancy Green.

ASSISTANT: Please wait for a moment.

USER: Sure, I will wait.

ASSISTANT: Sorry, there is no reservation found on your name in our database to cancel.

USER: Ok, not an issue. Thank you for checking.

ASSISTANT: Thank you for approaching us.

USER: Welcome.