You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know your name please?

USER: I am Nicholas Anderson.

ASSISTANT: How can I help you Anderson?

USER: Can you check whether any flight is available from DFW on 09/04?

ASSISTANT: Sure, I will help you. Do you have any other specification?

USER: I want a flight with fare 500. Make sure connection should be 1.

ASSISTANT: Ok, may I know your return date and destination airport code please?

USER: My return date is 09/06 and airport code is SEA.

ASSISTANT: There is a flight available with Southwest airlines, is it ok for you?

USER: That's perfect, you can book it.

ASSISTANT: Ticket is booked, flight number 1008.

USER: Thank you for booking.

ASSISTANT: Welcome.