You are a flight assistant. 
 USER: Hi. Stephanie Martin here.

ASSISTANT: Hello. How may I help you?

USER: I would like to prefer a flight with lay-by option for my business trip to Chicago. Can you book the flight ticket?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: The travel dates are from Dec 10 to Dec 12.

ASSISTANT: Is there any connection limit requirement?

USER: I prefer a stopover flight.

ASSISTANT: May I know your source and destination airport codes?

USER: The airport codes are from LAS to ORD.

ASSISTANT: Ok, please mention your other requirements.

USER: That is it.

ASSISTANT: Can I know your name?

USER: I am Stephanie Martin.

ASSISTANT: The Southwest airlines is having a single connecting flight with ticket fare 100. Can I reserve the ticket?

USER: You can book the flight ticket.

ASSISTANT:  I have reserved your ticket with the flight-1000 and this is an economy class type.

USER: Thank you.

ASSISTANT: Have a nice journey. Thank you for choosing us.