You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you please book a flight ticket from HOU to JFK?

ASSISTANT: Sure, can I know your travelling dates?

USER: My trip is in Dec from 7th to 9th.

ASSISTANT: Do you have any other preference?

USER: I prefer to travel on a single connecting flight.

ASSISTANT: Can I know your class preference?

USER: I am fine with any class.

ASSISTANT: There is a flight of American airline, flight number 1000 with the fare of 300.

USER: Please proceed.

ASSISTANT: Can I know your name, please?

USER: Jonathan Campbell here.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.