You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, Please inform me, how can I best help you now?

USER: I need a ticket from New York to Detroit for business trip.

ASSISTANT: Ok, may I know your travelling dates?

USER: Depart is by 06/18 and 06/20 will be return date.

ASSISTANT: Please share me your source and destination airport points?

USER: Sure. Airport codes are NY-EWR and MI-DTW.

ASSISTANT: Is there need any restrictions on your ticket fare?

USER: Price limit 200.

ASSISTANT: Do you need any flag stop in between journey?

USER: I need a flag stop.

ASSISTANT: Thanks for your details, we are happy to say that there is a flight found in Southwest airline of flight number 1001 and fare is 200. Shall I proceed for booking?

USER: Please proceed.

ASSISTANT: To proceed further, I need to know your good name please?

USER: I am Mark Robinson.

ASSISTANT: Ok, a ticket has been reserved on your name.

USER: Thank you.