You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I planned to meet my friend in LAS, can you please help me to book a flight ticket from ORD?

ASSISTANT: Sure, can you please let me know your journey dates?

USER: I prefer to travel on Apr 1 and Apr 3.

ASSISTANT: Do you prefer any stopover in between journey?

USER: I prefer to travel in a connecting flight.

ASSISTANT: May I know your name please?

USER: I am Debra Baker.

ASSISTANT: Do you have any more specifications?

USER: I would like to travel in business class.

ASSISTANT: We found a connecting flight with United airlines, flight number 1000, and the fare of 400 in business class. Shall I proceed?

USER: Ok, please confirm my booking.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for your help.

ASSISTANT: Thank you for approaching us.