You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How may I assist you?

USER: I am Robert Jackson. I intend to visit Los Angeles, CA - LAX to experience the telescope view of Griffith Observatory on 05/17.

ASSISTANT: Ok, Can you please provide your origin point and return date to book a ticket?

USER: Sure, my origin point is Boston, MA - BOS and return date is on 05/19.

ASSISTANT: Ok, Please wait a moment, I will get back to you with the results.

USER: OK.

ASSISTANT: Thanks for waiting. Sorry, There was no flight available that matches with your information.

USER: It's ok, thanks for providing the information.

ASSISTANT: Thanks for choosing us.