You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to book a ticket from ORD to MSP to attend Innovation festival to share my ideas. Can you help me?

ASSISTANT: Can I know your travelling dates?

USER: My trip dates are 08/22 and 08/24.

ASSISTANT: Is there connection preference?

USER: I need only direct flight.

ASSISTANT: Ok. Do you have specification?

USER: No.

ASSISTANT: Can I know your name?

USER: Mary Johnson here.

ASSISTANT: Direct flight is found with Delta airlines for price 500. Shall I book a ticket?

USER: Go ahead.

ASSISTANT: Your ticket is booked in business class having flight number 1021.

USER: Thank you so much.

ASSISTANT: Thank you.