You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to cancel my recent reservation, can you please help me out?

ASSISTANT: Sure, I here to help you. May I know your name?

USER: Thanks, my name is Ryan Walker.

ASSISTANT: There is no reservation found under your name to cancel.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for choosing us.