You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to attend a Flower festival at Houston, can you please book a plane ticket within the fare 1000?

ASSISTANT: Sure, can I know the travel dates please?

USER: My preferred travel dates are 11/17 and 11/19.

ASSISTANT: Can you provide the take off and landing airport codes please?

USER: I would like to fly from OAK to HOU.

ASSISTANT: May I know your name for proceeding further?

USER: My name is Brian Davis.

ASSISTANT: Brian, there is a flight for you in Delta airline with price 200. Shall I book it?

USER: Please book my ticket.

ASSISTANT: Your ticket has been booked with flight number 1003.

USER: Thank you for your assistance in booking a ticket.

ASSISTANT: You are welcome.