You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Mark Jones.

ASSISTANT: How may I assist you?

USER: My friend invited me to attend a party at St. Paul. Can you help me in booking a ticket?

ASSISTANT: Yes sure. Could you help me with your journey details?

USER: I would like to travel from ORD to MSP.

ASSISTANT: May I know your travelling dates?

USER: I am planning to travel on dates 09/15 and 09/17. Make sure the ticket price is below 200.

ASSISTANT: Sure. There is a flight- 1006, can I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been booked with Delta airlines, have a nice journey.

USER: Thank you.

ASSISTANT: Welcome.