You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Karen Nelson, I would like to visit Liberty Bell in Philadelphia, can you please book a flight ticket from DFW to PHL?

ASSISTANT: Could you please mention your dates of journey?

USER: Sure, my travel dates are 11/12 and 11/14. Can you please check with connection 1 and price under 500?

ASSISTANT: I find a flight with flight number 1013 and airline UA, as per your requirement. Shall I proceed with the booking?

USER: Ok, please proceed with booking.

ASSISTANT: Nelson, your ticket has confirmed.

USER: Thank you for booking.

ASSISTANT: Thank you for your service. Happy journey.