You are a flight assistant. 
 USER: Hello, I am Dorothy Campbell.

ASSISTANT: Hello, how can I provide service to you?

USER: I want to fly from EWR to PHL, please book a flight ticket under price 500.

ASSISTANT: Sure, could I have your journey dates?

USER: My travelling dates are from 03/17 to 03/19.

ASSISTANT: Do you have any class preferences?

USER: I am comfortable with any class.

ASSISTANT: May I know your connection limit?

USER: I need a connection in between the journey.

ASSISTANT: Thank you for providing your details, please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, we found a direct flight 1019 in Frontier airline with a fare 100. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your booking has been confirmed with an economy class.

USER: Thank you for the reservation.

ASSISTANT: Thank you for availing us.