You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to visit Los Angeles County Museum of Art in Los Angeles, so I want to book a ticket from Houston.

ASSISTANT: On which dates you are willing to travel?

USER: I would like to travel from Houston HOU airport on 12/08.

ASSISTANT: Please provide your airport codes.

USER: My trip completes on 9th, so I want to return on 12/10 from Los Angeles LAX airport.

ASSISTANT: May I know your name?

USER: My name is George Lee.

ASSISTANT: There is direct flight available. shall I proceed?

USER: Direct flight is ok for me, please proceed for booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for your help. Great service.

ASSISTANT: Most welcome.