You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I would like to visit Oakland, please help me to book my flight ticket from DFW to OAK.

ASSISTANT: Sure, I will help you. Please help me with your planned travelling dates.

USER: I will depart on Aug 20th and return back on Aug 22nd.

ASSISTANT: Do you need a break in between your journey?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any other preferences in your journey?

USER: No.

ASSISTANT: Please help me with your name.

USER: My name is Donald Evans.

ASSISTANT: Please allow me a minute.

USER: Sure.

ASSISTANT: We have a connecting flight operated by Spirit Airlines with a fare of 100 only. Shall I book the flight ticket?

USER: Happy to hear that, please book the ticket.

ASSISTANT: I have booked your ticket in the flight-1012. It departs at 17:00 hours and arrives at 14:00 hours.

USER: Thank you so much.

ASSISTANT: Thank you for reaching us. Have a great time.