You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Dennis Gonzalez. I have planned for a tour with my friends, but due to some personal problems, I would like to cancel my reservation. Help me in cancelling reservation.

ASSISTANT: Sure, I will help you. Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Its ok, thank you for your response.

ASSISTANT: Thank you for reaching us.