You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you for today?

USER: Could you please help me to book a ticket from TX-DFW to CO-DEN?

ASSISTANT: Sure, can you please provide me the preferable dates of your journey?

USER: I prefer to travel on 05/24 and 05/26.

ASSISTANT: OK, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting. There is one flight matching with your requirements. The flight number is 1000, southwest is the airline has the price 100 and the connections limit is 1.

USER: OK, please book the ticket.

ASSISTANT: May I know your name please?

USER: Sure, I'am Ruth Edwards.

ASSISTANT: OK Ruth, now your ticket has been booked.

USER: Thank you for the help.

ASSISTANT: Thank you, have a safe journey.