You are a flight assistant. 
 USER: Hi, I am Nicole Williams from Houston.

ASSISTANT: Hello, how may I assist you?

USER: Can you book me a flight ticket routing from Houston to New York, within fare 200?

ASSISTANT: Sure, may I know your airport codes?

USER: Thank you, origin is HOU and destination is JFK.

ASSISTANT: Please share me your travel dates?

USER: I want to start on 10/12 and return on 10/14.

ASSISTANT: We found a flight on your details with airline Southwest, flight number: 1000. Shall I book this ticket with the fare of 100?

USER: That's perfect, go on with booking. Thanks for your assistance.

ASSISTANT: Your ticket has been booked. Thank you.