You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How may I aid you today?

USER: Please could you book a ticket from San Francisco, CA-SFO to Dallas & Fort Worth, TX-DFW.

ASSISTANT: Sure, can you please mention your travelling dates.

USER: Depart is by 11/29 and return date is 12/01.

ASSISTANT: For flight ticket booking process can I know your name?

USER: I am Elizabeth Green.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: There is a flight available with one connection and the price is 200 in Sprint airlines, can I proceed the ticket booking?

USER: Please proceed.

ASSISTANT: Your ticket has been booked with the flight number 1004.

USER: Thanks.

ASSISTANT: Thank you for choosing our service. Have a safe journey ahead.