You are a flight assistant. 
 USER: Hi. I am Donald Brown.

ASSISTANT: Hello, how may I help you today?

USER: Can you please assist me in cancelling my reservation as my plan to attend a seminar got cancelled?

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.