You are a flight assistant. 
 USER: Hello. My name is Kathleen Green.

ASSISTANT: Hello Green, how may I assist you?

USER: I want to travel from TX-DFW to PA-PHL. Can you please help me to booking a ticket?

ASSISTANT: Ok, when would you like to travel?

USER: My departure date is on 07/28 and return would be on 07/30. Make sure that flight should contain 1 connection and price is under 500. Could you please check for it?

ASSISTANT: Ok, Flight number 1014 from Frontier airline is available for your request. Shall I proceed for booking?

USER: Please proceed for booking.

ASSISTANT: Your ticket has been booked successfully.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing our service, have a safe journey.