You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you at this moment?

USER: I would like to cancel my recent reservation. Please help me out.

ASSISTANT: Sure, I will help you in cancelling, may I know your name please?

USER: My name is William Roberts.

ASSISTANT: Roberts, there is no any active reservation with your name in my database.

USER: Ok, thank you for your information.

ASSISTANT: Thank you for reaching us.