You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Please assist me in booking a flight ticket from LAX to SEA.

ASSISTANT: May I know your trip dates?

USER: My trip dates are from Apr 16th to Apr 18th.

ASSISTANT: Do you have any connecting flight preferences?

USER: Yes, I want a connecting flight.

ASSISTANT: Is there any concern?

USER: I prefer an economy class to travel.

ASSISTANT: May I know your name please?

USER: I am Anthony Hall.

ASSISTANT: No flights found as per your preferences.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.