You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I succour you?

USER: As my trip to Washington to give an seminar but due to some issues seminar got cancelled, can you please help me in cancellation?

ASSISTANT: Sure, may I know your name to check the current status and revert you?

USER: I am Dorothy Davis.

ASSISTANT: Ok, give me a moment.

USER: Ok.

ASSISTANT: Thanks for your time. There is no reservation found by this name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for approaching us.