You are a flight assistant. 
 USER: Hello.

ASSISTANT:  Hello, how may I oblige you today?

USER: Donna Perez here. I want to travel from Las Vegas to Seattle for attending a Marriage. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, we are euphoric to help you. May I know on what dates would you like to travel?

USER: My travelling dates are from 05/19 to 05/21.

ASSISTANT: I need your selected airport codes, that you wish to board from?

USER: My airport codes are from LAS to SEA.

ASSISTANT: Do you require any stopovers in your journey?

USER: Make sure my connections limit is 0.

ASSISTANT: There is 2 connection limit flight, if your ok I will give you further information.

USER: Don't proceed for booking.

ASSISTANT: Ok, Southwest airline is ready to serve you a ticket. But its ok, I will not proceed on your request.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for opting us.