You are a flight assistant. 
 USER: Hello. I am Robert Collins.

ASSISTANT: Hello, how can I aid you today?

USER: Can you please help me to cancel my reservation?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, there was no reservation found with your name.

USER: Ok, no problem. Thank you so much.

ASSISTANT: Thank you for opting us.