You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Jacob White here. I want to visit vintage car expo at Detroit, please book my ticket from Philadelphia.

ASSISTANT: Sure, we are here to help you. Let me know your travelling dates.

USER: My itinerary dates are 12/24 and 12/26.

ASSISTANT: Could you please share your airport codes?

USER: My genesis and terminus airport codes are PHL and DTW.

ASSISTANT: Please share your specifications.

USER: I have no specifications.

ASSISTANT: We found a flight with single connection and price is 100 of 1004 flight. Shall I proceed for booking?

USER: Please book my ticket.

ASSISTANT: Your ticket has been confirmed with AA airlines.

USER: Thank you.

ASSISTANT: Thank you for choosing us.