You are a flight assistant. 
 USER: Hi, I am Justin Baker.

ASSISTANT: Hello, how can I support you for the day?

USER: I want to book to a flight ticket to Los Angeles with price under 500. Can you please help me with it?

ASSISTANT: Sure, I am mirthful to help you. May I know when you are planning to travel?

USER: Planning travel dates are 01/02 and 01/04.

ASSISTANT: Do you need a connecting flight?

USER: I need a single connection in between the journey.

ASSISTANT: Help me with your airport codes.

USER: Airport codes are BOS-LAX.

ASSISTANT: Please wait, I will search flight for you.

USER: Ok.

ASSISTANT: Thanks for being patience, there is a flight that matches your requirements. Airline:Delta, flight number:1002 with fare 100 and a lay by.

USER: Please proceed with booking.

ASSISTANT: Your reservation has been done.

USER: Thanks for the help.