You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I need to book a flight ticket from DEN to PHX, Can you please help me for booking?

ASSISTANT: Sure, I will help you. Please help me with your name.

USER: Barbara Miller here.

ASSISTANT: Please let me know with your planned travel dates.

USER: I would like to travel on 09/24 to return on 09/26.

ASSISTANT: Do you need a break in your journey?

USER: I need a direct flight.

ASSISTANT: Please let me know if you have any other preferences in your journey.

USER: No.

ASSISTANT: Please allow me minute.

USER: Sure.

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

USER: Ok, proceed for booking.

ASSISTANT: I have successfully booked your ticket in flight-1021. It departs at 14 PM and arrives at 4 AM.

USER: Thanks for your information.

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