You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jonathan Baker.

ASSISTANT: By what way can I address you?

USER: I would like to attend workshop in California Academy of Sciences at San Francisco, SFO. So, can you please help me in booking a flight ticket within price 500?

ASSISTANT: Ok. When you are planning to travel?

USER: I am planning to go on 10/05 and return back on 10/07.

ASSISTANT: I need your boarding point for further proceeding.

USER: I will depart from LGA airport.

ASSISTANT: Have any connection limit?

USER: Yes, I need a halt.

ASSISTANT: We found a direct flight for you. Is it Ok?

USER: No.

ASSISTANT: Fine, thank you for choosing us.

USER: Thank you.