You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you now?

USER: I want to cancel my recent reservation due to some family problems. Can you please help me with this?

ASSISTANT: Ok, please mention your name to check with my booking.

USER: Sure, I am Shirley Martin.

ASSISTANT: Ok, give me a moment to check with availability.

USER: Ok, take your time.

ASSISTANT: Shirley Martin, there is no reservation in our data base by your name. Thank you for choosing our services.

USER: Thank you for checking.