You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I would like to travel from AUS to ORD as a business trip, can you do the reservation?

ASSISTANT: Please provide your travelling dates?

USER: My journey dates are 08/21 and 08/23.

ASSISTANT: Do you have any preferences?

USER: No.

ASSISTANT: Is there any connection preference?

USER: No, I am comfortable with any connection.

ASSISTANT: Connecting flight is found with United airlines for price 100 having flight number 1004. Shall I book a ticket?

USER: Go ahead.

ASSISTANT: Can I know your name?

USER: Karen Johnson here.

ASSISTANT: Ticket is booked.

USER: Thank you so much.

ASSISTANT: Thank you.