You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what kind of service your looking for?

USER: I need to cancel my reservation due to sudden change in my trip. can you assist me in cancellation process?

ASSISTANT: Sure, please share me your good name.

USER: Benjamin Evans here.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry for inconvenience, no reservation is found under your name.

USER: No problem, thank you for searching.

ASSISTANT: Thank you for opting us.