You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Brian Lewis planning to visit New York on 10/19 and return back on 10/21. Can you help me to book a flight ticket?

ASSISTANT: sure, I will help you. Can you please share your airport codes?

USER: Sure, I want to fly from PHL to EWR.

ASSISTANT: Please hold on a moment.

USER: Ok.

ASSISTANT: I found a flight for you in Frontier airlines with price 100. Shall I proceed?

USER: Ok, proceed with my booking.

ASSISTANT: Ok, your booking is confirmed with flight number 1011.

USER: Thank you.

ASSISTANT: Thank you for reaching us.