You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brian Hill.

ASSISTANT: Brian Hill, how may I assist you today?

USER: Can you please book a flight ticket from DFW to PHL?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please help me with your planned travel dates.

USER: Sure, I have planned my travel dates as May 21 and May 23.

ASSISTANT: Do you need a direct or connecting flight?

USER: I am ok with both flights.

ASSISTANT: Please help me with your preferred depart and return time.

USER: Sure, I would like to return in evening time so please check with that.

ASSISTANT: Please help me with your class preference.

USER: I don't have any specific class to travel.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: We have a connecting flight operated by Southwest Airlines with a fare of 100. Is it ok for you?

USER: That is fine, please proceed with booking.

ASSISTANT: I have booked your ticket in flight-1029. It would depart at 7 AM and arrives at 23 PM.

USER: Thank you for your help.

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