You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Please book a flight ticket from IAH to LGA.

ASSISTANT: Sure, may I know your travelling dates?

USER: Dec, 26 and Dec, 28 are my travel dates.

ASSISTANT: Can I know your connection limit?

USER: I need a direct flight.

ASSISTANT: Do you have any other preference?

USER: No.

ASSISTANT: Could please help me with your name?

USER: Carolyn King here.

ASSISTANT: There is a flight on United airline, flight number 1004 with the fare of 200. Can I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for choosing us.