You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Robert Lewis. I need your help in cancelling my flight reservation, can you please help me?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there was no reservation found on your name.

USER: Not an issue, thank you for checking.

ASSISTANT: Thank you for choosing us.