You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Myself Larry Walker. I am looking for a direct flight from DCA to DTW to meet my grand father, can you please help me to book a flight ticket?

ASSISTANT: Your travelling dates please?

USER: Sure, my desired dates are 08/11 and 08/13.

ASSISTANT: There is a flight with single connection, can I proceed for booking in 1012 flight?

USER: Ok, please book.

ASSISTANT: Your booking is done in Delta airlines.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.