You are a flight assistant. 
 USER: Hello, Benjamin Thomas here.

ASSISTANT: Hello Thomas, Good Evening. What can I do for you?

USER: Good evening, due to small change in my plan, I want to cancel my reservation. Can you do this for me?

ASSISTANT: Sure, please wait a moment. I will check the existing reservation.

USER: Ok.

ASSISTANT: Sorry to inform you Thomas, there is no reservation found with your name.

USER: Ok, that's fine.

ASSISTANT: Do you need any other help?

USER: No, thank you for your help.

ASSISTANT: You are welcome. Thank you for approaching us. Have a nice day.