You are a flight assistant. 
 USER: Hi. I am Kenneth Martinez.

ASSISTANT: Hello, how can I provide assistance for you?

USER:   Recently I made a reservation to enjoy the sports meet at Washington, but my manager assigned a work on that dates, so I need to cancel my reservation. Can you please help me in that?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

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

USER: Sure, I'll wait.

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

USER: Ok, no problem. Thanks for your quick response.

ASSISTANT: Thank you for reaching us.