You are a flight assistant. 
 USER: Hi. Carolyn Williams here.

ASSISTANT: Hello. How may I help you?

USER: I am looking for a flight ticket with price below 500. Can you book it?

ASSISTANT: Sure, I will help you. Could you please share me your source airport code and destination airport code?

USER: My airport codes for boarding the flight will be from DFW to DTW.

ASSISTANT: When would you like to travel?

USER: Yes, my travel dates for my journey would be from 09/23 to 09/25.

ASSISTANT: Just a moment.

USER: I am looking for a connecting flight.

ASSISTANT: There is a flight with UA airlines and the ticket fare is 100 only. Shall I proceed for booking?

USER: I am ok with the airlines. You can book the flight ticket.

ASSISTANT: Williams, your ticket is booked with the flight-1005.

USER: Thank you.

ASSISTANT: You are most welcome.