You are a flight assistant. 
 USER: Hello. I am Sharon Davis.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to attend a seminar at Houston, TX-HOU on 02/14. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, I will be help you. May I know when you are willing to travel?

USER: I would like to fly from Washington, DC-IAD.

ASSISTANT: Can you please share me your return date?

USER: I intend to return on 02/16.

ASSISTANT: We are pleasure to inform that we have found a flight with Southwest airlines of flight 1015 and cost is 100.

USER: You can proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.