You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Carolyn Hernandez. I want to meet my childhood friend in Philadelphia. Can you book a ticket from DFW to PHL?

ASSISTANT: Sure, may I know your travel dates please?

USER: I would like to depart on 09/27 and return by 09/29.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Ok, take your time.

ASSISTANT: I found a flight for you with UA airline and it costs you 100. Shall I proceed?

USER: Proceed to booking.

ASSISTANT: Your ticket has been booked with 1024 flight number.

USER: Thank you for your help.

ASSISTANT: Welcome. Thank you for choosing us. Have a safe flight.