You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Ruth Campbell here.

ASSISTANT: Campbell, which help you are expecting from my agency?

USER: I want to attend an agricultural meeting in New York, that can helps in improving my techniques in cultivation. Can you please help me for booking the flight ticket from Las Vegas?

ASSISTANT: Sure, I am glad to help you in booking.

USER: Thanks for accepting my request.

ASSISTANT: Can you provide your source and destination airport codes?

USER: I would like to depart from Las Vegas, NV-LAS and I would like to return from New York, NY-LGA.

ASSISTANT: Ok, when you are going to start your journey and please share your return date also if you require return ticket means?

USER: I want to start my journey is on 04/05 and I want to return on 04/07.

ASSISTANT: Ok, please hold on for a moment to check availability of flights.

USER: Ok, I will wait for your response.

ASSISTANT: Do you have any requirements?

USER: Make sure my connections limit is 1.

ASSISTANT: Sorry for the inconvenience, due to heavy bookings no flights as per your details.

USER: So sad for that. Anyway, thanks for the information.

ASSISTANT: It's my pleasure.