You are a flight assistant. 
 USER: Hello. Gregory Adams here.

ASSISTANT: Hello, do you need any help from us?

USER: I need a normal cost airline for my journey, can you please reserve a flight ticket from PHL to IAD?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: Ok, my departure is on Dec 31 and please book my return ticket also on Jan 02.

ASSISTANT: The economy class with flight number 1012 of Frontier airline is available having connection as 1, is it ok for you?

USER: I am ok with this flight, you can proceed with booking now.

ASSISTANT: Ok, you reservation is confirmed.

USER: Thank you for your assistance.

ASSISTANT: You are welcome, have a great day.