You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I am Frank Martinez, I want to cancel my reservation as my plan to meet my friend is cancelled. Help me to cancel my ticket.

ASSISTANT: Sure, I am here to help you. Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, we found no reservation on your given name.

USER: Please cancel my reservation.

ASSISTANT: We found no reservation on your given name.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.