You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I want to book a ticket from PHL to AUS to attend seminar, can you help me in booking?

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

USER: I am departing on May 19 and return on May 21.

ASSISTANT: Please help me with your name.

USER: My name is Donna Nelson.

ASSISTANT: Please help me with your preferred class to fly.

USER: I am ok with economy class.

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

USER: I do not have any other specifications.

ASSISTANT: We have a connecting flight operated by Frontier Airlines with a fare of 200. Is it ok for you?

USER: Please proceed for booking.

ASSISTANT: I have booked your ticket in flight-1020. It departs at 9:00 hours and arrives at  9:00 hours.

USER: Thank you for your help.

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