You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: Andrew Clark here, I need to cancel my reservation as my plan to go for trekking got cancelled. Can you help me?

ASSISTANT: Sure, may I know your name for the cancellation process?

USER: I have already mentioned above.

ASSISTANT: Sorry, as per your concern I can not cancel your reservation, as your reservation is not found as per our records for cancel.

USER: Ok fine, thanks for checking.

ASSISTANT: Welcome, thank you for reaching us.