You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

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

ASSISTANT: Sure, May I know your name?

USER: Sure, my name is Samantha Brown.

ASSISTANT: Please wait a second.

USER: Sure.

ASSISTANT: Sorry, No reservation found on your name.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: Thank you for opting us.