You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: Brian Taylor here. Could you book my ticket in a connecting flight?

ASSISTANT: Sure, May I know your travelling dates?

USER: My trip dates are Dec 29 and Dec 31.

ASSISTANT: Can you share me your airport codes?

USER: I want to travel from BOS to MSP.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Thanks for waiting. You have a flight 1004 in Delta airline and price 200 with a connection, Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.