You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Joshua Harris here. Can you book a flight ticket for my airport codes that is from DCA to SFO?

ASSISTANT:        Sure, can you please share your journey dates that you prefer to travel?

USER: The travel dates are from 11 Dec to 13 Dec.

ASSISTANT:  Do you require any stopovers in your journey?

USER: I prefer a stopover flight.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: That is it.

ASSISTANT: Ok, please wait a minute I will get back to you with the flight details.

USER: Sure.

ASSISTANT: Thank you for your time, Spirit Airlines is providing a connecting flight and the airfare is about 200 with flight 1002. Shall I proceed with booking?

USER: I am fine with the airlines. You can book it.

ASSISTANT: Sure, your ticket is booked in economy class.

USER: Thank you.

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