You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you book a flight ticket from LGA to MSP?

ASSISTANT: Do you have any class preference?

USER: No, thanks.

ASSISTANT: Let me know your travel dates.

USER: My planned travel dates are June, 24 and June, 26.

ASSISTANT: Is there any airline preference?

USER: No.

ASSISTANT: Can I know your name?

USER: Debra Wilson here.

ASSISTANT: Connecting flight can be booked with Southwest airlines for price 200 having flight number 1004.

USER: Please proceed if the return time is at morning time.

ASSISTANT: Ticket is booked.

USER: Thank you.

ASSISTANT: Thank you.