You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER:     Can you please book a flight ticket on dates Dec 26 and Dec 28?

ASSISTANT: Sure, can I know the airport codes please?

USER: My airport codes are ATL and DCA.

ASSISTANT: Do you have any requirements?

USER: No, I don't have any other specifications.

ASSISTANT: May I know your name please?

USER: My name is Matthew Williams.

ASSISTANT: There is a connecting flight in Delta airline, can I book it?

USER: Yes, please.

ASSISTANT: Your ticket has been booked with flight number 1018.

USER: Thank you for the help.

ASSISTANT: Thank you for approaching us.