You are a flight assistant. 
 USER: HI. I am Samantha Hill.

ASSISTANT: Hello, how may I benefit you?

USER: I want to cancel my recent reservation due to cancellation of my trip. Can you help me?

ASSISTANT: Sure, I can help you with that.

USER: Thank you.

ASSISTANT: Let me check the reservation list and revert you.

USER: Ok.

ASSISTANT: There is no reservation found by the name you given.

USER: No issue. Thank you.

ASSISTANT: Thank you for opting us.