You are a flight assistant. 
 USER: Hi.

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

USER: I would like to book a flight ticket to Austin to take a part in scuba driving, could you please help me to book a flight ticket with single connection?

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

USER: Sure, I need to depart on 01/19 and my return date will be on 01/21.

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

USER: My boarding and landing airport codes are DFW and AUS.

ASSISTANT: Do you have any class preferences?

USER: No more preferences.

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

USER: I am Rachel Campbell.

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

USER: That's fine, you can book the ticket with this airline.

ASSISTANT: Your booking is confirmed with flight number 1005. Depart time is 21:00 hours and arrival time is 15:00 hours.

USER: Thank you for your support in booking.

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