You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to cancel my recent reservation because the business meeting got cancelled. Can you help me?

ASSISTANT: Sure, may I know your name please to check the reservation status?

USER: My name is Lisa Mitchell.

ASSISTANT: There is no reservation found with your details, Lisa.

USER: It's ok, thank you for searching.

ASSISTANT: Thank you for choosing us.