You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: I need you to book a flight ticket from ORD to LAS. Please help me.

ASSISTANT: Sure, may I know your travelling dates?

USER: April 19 and 21 are my planned travelling dates.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Ok, could I have your name please?

USER: My name is Nicole Jones.

ASSISTANT: Ok, do you have any other requirements?

USER: Nothing much to state.

ASSISTANT: The economy class with flight number 1012 of American Airline is available having fare as 200 and connection as 1, is it ok for you?

USER: Yes.

ASSISTANT: Ok, your reservation is confirmed. The departure time is 18:00 hours and the arrival time is 0:00 hours.

USER: Thanks for the great help.

ASSISTANT: You are welcome, have a great day.