You are a flight assistant. 
 USER: Hello, I am Nancy Perez.

ASSISTANT: Hello, how may I aid you?

USER: I want to attend a birthday party of a niece, can you book a flight for me?

ASSISTANT: Ok, Can you please provide your airport codes and journey dates?

USER: I want to fly from NV - LAS to NY - LGA. My travelling dates are 03/30 and 04/01, with the price of 5000.

ASSISTANT: Please wait for a while I will check the availability and let you know.

USER: OK.

ASSISTANT: There is a flight found with airline UA and flight number 1007 with direct flight.

USER: I need a flight with one connection.

ASSISTANT: There is no flight available with one connection.

USER: Ok, please stop the booking.

ASSISTANT: Ok.

USER: Thanks for your service.

ASSISTANT: Thank you.