You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you now?

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

ASSISTANT: Sure, I will help you with that. May I know your good name?

USER: I am Donald Lewis.

ASSISTANT: Thank you for your name, sorry there is no reservation found on your name in our system data.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for visiting us, we hope see you again.