You are a flight assistant. 
 USER: Hello, I am Raymond Allen.

ASSISTANT: Hello,. How may I assist you?

USER: I want to attend my friends place for visitation purpose at PHL. Can you book my flight with price range of 500?

ASSISTANT: Sure, please provide your journey dates.

USER: I will fly on 02/21 and recur on 02/23. I need a connecting flight.

ASSISTANT: Please provide your origin airport.

USER: My source point is ORD.

ASSISTANT: Thank you for the information, we found a flight with number 1002 and Frontier as airline.

USER: Proceed with booking.

ASSISTANT: Your booking has been done.

USER: Thank you for your quick response.

ASSISTANT: Thank you for reaching us.