You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you at this moment?

USER: I am Susan Moore, I would like to meet my brother at Washington with my parents. Could you please help me with booking a flight ticket from Houston?

ASSISTANT: Sure, I am glad to help you with the ticket booking. May I know your journey dates please?

USER: Sure, I intend to board on May 31 and return on June 2.

ASSISTANT: Ok, please let me know your preferred airport codes.

USER: Sure, my travelling airport codes are HOU and IAD.

ASSISTANT: Ok, do you have any class preference?

USER: I am comfortable with any type of class.

ASSISTANT: Ok, how many halts do you need in between your journey?

USER: I need a stop over in between the journey.

ASSISTANT: Ok, please give me a moment to check the flight availability.

USER: Sure.

ASSISTANT: There is a flight-1015 on the dates you have given which is having a single halt and the ticket fare is 100. Shall I proceed to reserve the economy class ticket?

USER: Yes, please proceed with booking.

ASSISTANT: The flight ticket has been booked successfully with the airline Spirit and the flight is departing in the afternoon time. Have a safe flight.

USER: Thank you for your assistance.

ASSISTANT: You are welcome. Thank you for choosing our travel agency.