You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I aid you?

USER: I am Karen Young. I want to enjoy my beach holidays at Santa Monica bay in Los Angeles. Can you book me a ticket within the range 200?

ASSISTANT: Sure. Can I know your travelling dates?

USER: I want to travel on 05/08, and need to catch return flight on 05/10.

ASSISTANT: Please share me your airport codes.

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

ASSISTANT: We found a South West airline, flight number:1019 and the price is 100.

USER: Proceed with the booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thanks for the assistance.

ASSISTANT: Thank you.