You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I am Ronald Campbell. I want to book a ticket from LGA to EWR, can you help me?

ASSISTANT: Sure, I am here to help you. Can you please share your trip dates?

USER: My travel dates are June 10 and 12.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: May I know your airline preference?

USER: I am comfortable with any airline.

ASSISTANT: Do you have any specific departure and return time?

USER: I want to return in the evening.

ASSISTANT: Which class do you prefer?

USER: I am comfortable with any class.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: UA airlines is providing you a flight with a ticket fare 100 which departs at 3:00 AM and return at 0:00 AM, shall I proceed with booking?

USER: You can book it.

ASSISTANT: Your ticket is confirmed with the flight-1000 in business class.

USER: Thank you for booking.

ASSISTANT: Welcome, have a safe journey.