You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Can you please help me in cancelling my recent reservation?

ASSISTANT: Sure, may I know your name?

USER: Thank you for accepting my request and I have reserved my ticket with name Patricia Green.

ASSISTANT: Please give me a moment.

USER: Ok, sure.

ASSISTANT: Sorry Patricia Green, no reservation is available by your name.

USER: Thanks for checking.

ASSISTANT: Thank you for reaching us.