You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Patricia Jones want to visit workshop at Seattle, can you book a ticket with price under 200?

ASSISTANT: Sure, please share your airport codes.

USER: Ok, I want to fly from LAX to SEA.

ASSISTANT: May I know your itinerary dates?

USER: Sure, my travelling dates will be 10/02 and 10/04.

ASSISTANT: Please hold on for a moment.

USER: Ok.

ASSISTANT: Sorry Jones, no flight is available.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us.