You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I serve you today?

USER: Help me to book a ticket.

ASSISTANT: Sure, may I know your name please?

USER: Sure, Nancy Moore.

ASSISTANT: OK,could you please let me know your journey points?

USER: I need a flight from Las Vegas, NV-LAS to Houston,TX-HOU.

ASSISTANT: Can you provide me your preferable travelling dates?

USER: I am travelling on Apr 30 and returning on May 2.

ASSISTANT: OK, please stand by I will check and get back to you.

USER: OK.

ASSISTANT: Thanks for being patient. There is a flight matching your criterion with airline-UA flight number-1011 with the price 200. Shall I proceed with this booking?

USER: Can you provide me the connection limit of this flight?

ASSISTANT: Yes, There is a connection limit with 1.

USER: OK, book a ticket for this flight.

ASSISTANT: Your ticket has been conformed.

USER: Thank you for helping me.

ASSISTANT: pleasure to serve you, have a nice day.