You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to attend a Seminar in Los Angeles. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, can you provide your trip dates?

USER: My travelling dates are July 21 and July 23.

ASSISTANT: May I know your airport codes?

USER: My airport codes are AUS and LAX.

ASSISTANT: Do you have any preferences?

USER: I prefer single connecting flight.

ASSISTANT: May I know your name?

USER: My name is Raymond Martinez.

ASSISTANT: There is a connecting flight with number 1005 in airline UA, the fare is 200 in economy class. Can I book it?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Your ticket is reserved.

USER: Thanks for helping me.

ASSISTANT: Thank you for opting us.