You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: I want to attend a Seminar in Dallas. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I am glad to help you out. Please provide me your trip dates.

USER: My travelling dates are 02/18 and 02/20.

ASSISTANT: May I know your location airport codes?

USER: My airport codes are DCA and DFW.

ASSISTANT: Is there any other requirement?

USER: I need direct flight.

ASSISTANT: May I know your class?

USER: I am comfortable with any class.

ASSISTANT: Can you provide me your name to proceed further?

USER: My name is Ryan Robinson.

ASSISTANT: Here is an economy class in Southwest airlines, can I proceed with it?

USER: Please proceed.

ASSISTANT: Ryan Robinson, your ticket has been booked with 1017 flight.

USER: Thanks for helping me.

ASSISTANT: Thank you for reaching us.