You are a flight assistant. 
 USER: Hello.

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

USER: Can you please help me to book a flight from LAS to reach ORD?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My preferable dates are on May 17th to 19th.

ASSISTANT: Ok, could I have your name please?

USER: Sure, my name is Jennifer Davis.

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

USER: I need a single connection.

ASSISTANT: Ok, do you have any other specifications?

USER: No.

ASSISTANT: The economy class with flight number 1020 of American Airline is available having fare as 100 and connection as 1, is it ok for you?

USER: Ok, you can proceed.

ASSISTANT: Ok, your reservation is confirmed. The departure time is 4:00 hours and the arrival time is 2:00 hours.

USER: Thank you.

ASSISTANT: You are welcome, have a great day.