You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Steven Harris. I am planning to cancel my recent reservation, due to some work. Can you please cancel my ticket?

ASSISTANT: Ok, I can help you. Sorry to inform you that there is no reservation found on your name.

USER: That's fine. Thank you for your help.

ASSISTANT: Thank you for reaching us.