You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am George Phillips. I am planning to meet my school friend in Philadelphia, so please book a flight ticket from TX - DFW to PA - PHL.

ASSISTANT: Sure, I am happy to help you. Can you please let me know your travel dates?

USER: My departure day is 04/20, return day is 04/22.

ASSISTANT: There is a flight available in Delta airlines and the ticket fare is 200 only. Can I book the ticket?

USER: You can proceed to booking.

ASSISTANT: Phillips, your ticket is booked with the flight-1006. Have a safe journey.

USER: Thank you.

ASSISTANT: You are welcome.