You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sarah Phillips.

ASSISTANT: How may I help you?

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

ASSISTANT: Sure, I am ready to help you.

USER: Ok.

ASSISTANT: Sorry, there are no reservation found on your name.

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

ASSISTANT: Thank you for opting us.