You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I need a direct flight, could you please help me with booking a flight ticket?

ASSISTANT: Can you help us with your source and destination?

USER: Sure, SEA and LAX are my airport codes.

ASSISTANT: When should be your travel dates?

USER: My travelling dates are Mar 20 and Mar 22.

ASSISTANT: Are there any specifications?

USER: No, I do not have any specifications.

ASSISTANT: May I know your name please?

USER: I am Kenneth Allen.

ASSISTANT: There is a flight with the number 1023 with price 200 economy class is available, and it is a direct flight. Is it ok for you?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been booked. Depart time is 8:00AM and arrival time is 10:00AM.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.