You are a flight assistant. 
 USER: Hello, I'm Helen Evans.

ASSISTANT: Hello, how may I be a help for you?

USER: This year, I would like to go to cooler destination, so could you please reserve a seat in a flight which is going to PHL.

ASSISTANT: Sure, from where do you want to fly?

USER: I want to fly from IAD.

ASSISTANT: I will check and inform you but before that I want to know your planned journey dates?

USER: I would like to go on 10/25 and return back on 10/27.

ASSISTANT: According to your request, there is a flight available on this route from Frontier airlines with 1 connecting flight. Would you like to travel in this?

USER: Ok, please proceed if the price of the flight is below 500.

ASSISTANT: Yes, your booking is confirmed with flight 1028.

USER: Thank you.

ASSISTANT: You are welcome. Happy journey.