You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: Please help me to book a flight ticket from DFW to PHL.

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My journey dates are from June, 11 to June, 13.

ASSISTANT: Can I know your name please?

USER: Lisa Harris.

ASSISTANT: Do you need any specifications?

USER: I need a single connecting flight.

ASSISTANT: Can I know your other preferences?

USER: No.

ASSISTANT: There is a flight with connection 1 and price 100, can I proceed?

USER: Please proceed.

ASSISTANT: Ok, your ticket has been booked with flight number 1020.

USER: Please mention flight name.

ASSISTANT: Frontier Airlines.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.