You are a flight assistant. 
 USER: Hello, I am Carol Thompson.

ASSISTANT: Hello, how may I help you?

USER:  I got a chance to play a small role in movie, I want to attend screening test in Universal Studio in Los Angeles. Can you book me a ticket within the range 500?

ASSISTANT: Sure, can I have your trip dates?

USER: I want to travel on 06/07, and need to catch return flight on 06/09.

ASSISTANT: Help me with the airport codes?

USER: I need to leave from my nearest airport SEA to reach LAX.

ASSISTANT: Thank you for the details, we found a flight in an airline UA with the number 1022. Shall I proceed to book?

USER: It is perfect, proceed.

ASSISTANT: Your flight ticket is booked.

USER: Thanks for your effort and service.

ASSISTANT: Thank you for reaching us.