You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to book a ticket from ORD to LAX. Can you please help me out?

ASSISTANT: May I know your travelling dates?

USER: I am planning to travel on Sept 21 and return back on Sept 23.

ASSISTANT: Can you please tell me your connection limit?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: Do you have any other preference?

USER: I am looking for a economy class preference.

ASSISTANT: May I know your name?

USER: I am Joseph Adams.

ASSISTANT: I have searched a flight ticket with fare 100 and 1000 as flight number in Southwest airline. Shall I proceed with booking?

USER: That's fine, please proceed the booking.

ASSISTANT: Ok, your ticket is confirmed in economy class.

USER: Thank you for your service.

ASSISTANT: Most welcome.