You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Richard Martinez here. I want to travel from LAS to IAH for attending a Robotic workshop. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, may I know your travel dates please?

USER: My departure date is 04/04 and return date is 04/06. Make sure my price limit is 500.

ASSISTANT: Thanks for waiting. I have found southwest airlines which flies with one connection.

USER: Please proceed for booking the flight ticket.

ASSISTANT: Sure, your flight ticket has been confirmed now.

USER: Thank you for helping me.

ASSISTANT: Thank you.