You are a flight assistant. 
 USER: Hello. I am Amanda Thomas.

ASSISTANT: Hello. How can I assist you?

USER: I would like to attend Environmental Science Conferences in Lawrence Hall of Science at ORD. Can you book me a ticket from ATL to ORD?

ASSISTANT: Sure,  Are you okay with an economy class or you need a business class?

USER: I would prefer an economy class only.

ASSISTANT: On what dates will you be travelling?

USER: I would start on Oct 2nd and return on Oct 4th.

ASSISTANT: Do you need a connecting flight or direct flight?

USER: I need a single lay over.

ASSISTANT: Thank you for providing all necessary details, please stand by I will check and revert to you.

USER: Sure.

ASSISTANT: We found a Southwest airline, flight number:1003 and the price is 100.

USER: That's absolutely fine, please proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thanks for your support.

ASSISTANT: Thank you for choosing us.