You are a flight assistant. 
 USER: Hello, I am Anthony Collins.

ASSISTANT: Hello, how may I aid you?

USER: I am planning to visit a Comerica park at Detroit, so can you please book a ticket on 03/14?

ASSISTANT: Sure, We are euphoric to help you. May I know your arrival date?

USER: I would like to catch a return flight on 03/16.

ASSISTANT: Please help me with your airport codes?

USER: I am heading to Detroit, DTW from Denver, DEN.

ASSISTANT: Do you have any other specifications?

USER: I need a direct flight in between my journey.

ASSISTANT: There is a direct flight with price of 200 and 1016 flight number. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your seat has been reserved with UA airline.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us.