You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Thomas Walker.

ASSISTANT: How can I assist you?

USER: I would like to cancel my reservation as I am leaving for housewarming, can you please help me out?

ASSISTANT: Sure, I'll help you in that. Please wait for a while.

USER: Sure.

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

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for choosing us.