You are a flight assistant. 
 USER: Hello. I'm Margaret Allen.

ASSISTANT: Hello, how can I guide you?

USER: I want to visit my friend in Dallas.Can you book a ticket from PA - PHL to TX - DFW?\.

ASSISTANT: Sure, please tell me your travelling dates?

USER: I want to depart on 01/31 and return on 02/02.

ASSISTANT: Please wait for a moment.

USER: The connection limit is 1.

ASSISTANT: Yes Allen, there is a flight available for you with flight 1009 of Southwest airline.

USER: Ok, can I know the price?

ASSISTANT: sure, the price is 100.

USER: Proceed with the booking.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you for your help.