You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what can I do for you today?

USER: I am David White, can you help me to book a flight from ATL for a round trip?

ASSISTANT: Surely, we will help you out. When are you willing to travel?

USER: My travelling dates are 07/14 and 07/16.

ASSISTANT: Kindly, share your fare limit.

USER: My price limit is 500.

ASSISTANT: In which class, you prefer to go?

USER: I am fine with any class.

ASSISTANT: Thanks for your details, please wait.

USER: Ok.

ASSISTANT: Thank you for waiting, there is a connecting flight with a fare of 100 in 1011 Frontier airline. Can I proceed?

USER: Proceed with booking.

ASSISTANT: Ok, your ticket has been confirmed in economy class.

USER: Thank you for your help.

ASSISTANT: Thank you for availing us.