You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I amend you?

USER: I am Benjamin Hill. I want to cancel my recent reservation due to sudden change in my trip. Can you help me?

ASSISTANT: Sure. Please wait for a while, I will check your reservation.

USER: Ok.

ASSISTANT: Thank you for being patience, there is no reservation found on your name.

USER: No issue. Thank you.

ASSISTANT: Thank you for approaching us.