You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me to book a flight from DFW to LAS?

ASSISTANT: Sure, let me know your travel dates please?

USER: I want to travel on May 29 and need to return on May 31.

ASSISTANT: May I know your connection limit?

USER: I am looking for a flight with single connection.

ASSISTANT: Do you need any other preference?

USER: I prefer an normal-cost airline to travel.

ASSISTANT: Can I know your name please?

USER: Sure, I am Kathleen Lopez.

ASSISTANT: United Airlines is providing connecting flight with the ticket fare of 100 and depart time is 9:00 hours, arrival time is 22:00 hours. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been confirmed by flight number 1027 and an economy class.

USER: Thank you.

ASSISTANT: Thank you for choosing us.