You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I want to book a ticket from LAS to MSP, can you help me?

ASSISTANT: Can I know your travel dates?

USER: My travel dates are Dec 17 and 19.

ASSISTANT: Do you have any preference?

USER: I want to travel in normal cost airline.

ASSISTANT: Is there any connection limit?

USER: I prefer a connecting flight.

ASSISTANT: Let me know your name.

USER: I am Brian Turner.

ASSISTANT: Found ticket with Delta airlines for price 200 having flight number 1021.

USER: You can book it.

ASSISTANT: Ticket is booked.

USER: Thank you for booking.

ASSISTANT: Thank you.