You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I am Christopher Williams. I have planned for a adventure tour, due to my budget problems, I need to cancel my reservation. Can you help me with that?

ASSISTANT: Please wait a second.

USER: Sure.

ASSISTANT: Sorry, No reservation found on your name.

USER: Its ok, thank you for your response.

ASSISTANT: Thank you for opting us.