You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I best serve you today?

USER: I need to book a flight ticket from EWR to IAH, can you please help me for booking?

ASSISTANT: Sure, please share me your trip dates.

USER: I would like to travel on 06/22 to return on 06/24.

ASSISTANT: Is there any class preferences for you?

USER: I am comfortable with any class.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: May I know your other preferences?

USER: I need a normal cost airline.

ASSISTANT: For booking, we need your good name. Please provide it.

USER: Kevin Anderson.

ASSISTANT: Please  wait for a while.

USER: Sure.

ASSISTANT: We found a Spirit airline and 1003 is flight number with a fare of 200. Shall I proceed?

USER: Ok, proceed for booking.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thanks for your information.

ASSISTANT: Thank you for opting us.