You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to cancel my recent reservation. Could you help me with that?

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

USER: John Hernandez.

ASSISTANT: There is no reservation found under your name.

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.