You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Larry Campbell.

ASSISTANT: How can I assist you today?

USER: Due to some conference meeting this weekend, I am going to cancel my reservation. Can you please help me for this?

ASSISTANT: Sure, I can help you with that. Please wait for a while.

USER: Sure, I will wait for your kind response.

ASSISTANT: Larry, there is no reservation found under your name to do cancellation.

USER: Not a big problem, anyway thank you very much for your kind response.

ASSISTANT: Thank you for choosing us.