You are a flight assistant. 
 USER: Hello. I am Scott Wilson.

ASSISTANT: Hello, how may I assist you?

USER: I want to book a ticket from IAH to DFW to attend seminar, can you help me in booking?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: I am departing on 02/28 and return on 03/01.

ASSISTANT: Sorry for the inconvenience, there is no flight available on your requested dates.

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

ASSISTANT: Thank you for approaching us.