You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you for the day?

USER: I want to cancel my reservation, can you please help me with that?

ASSISTANT: Sure, I am here to help you. May, I know your good name?

USER: I am Ronald Thompson.

ASSISTANT: Sorry, we found no reservation on your given dates.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.