You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I need a economy class. Could you please help me with booking a flight ticket?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My travelling dates are June 21 and June 23.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: My airport codes are HOU and DCA.

ASSISTANT: Do you have any airline preferences?

USER: No, I do not have any airline preference, I need a break in between the journey.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: No, I do not have any other requirements.

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

USER: I am Joseph Thomas.

ASSISTANT: There is a flight with ticket fare 200 in Southwest airlines with a stopover in economy class. Is it ok for you?

USER: You can proceed with booking.

ASSISTANT: Your booking is confirmed with flight number 1019. Departure time is 22:00 PM and arrival time is 19:00 PM.

USER: Thank you for your help.

ASSISTANT: Thank you for contacting us, have a nice day.