You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER:  I am Jerry Adams. I want to book a ticket as my business meeting purpose, can you please book me a ticket from Washington?

ASSISTANT: Sure, please help me with your travelling dates?

USER: My travel dates are from 12/07 and 12/09.

ASSISTANT: Ok, let me know your airport codes?

USER: My airport codes are from DCA to ATL.

ASSISTANT: Ok, any other requirements?

USER: I need direct flight.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting, no flights found with your requested details.

USER: Ok, no problem. Thank you so much.

ASSISTANT: Thank you for opting us.