You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Ryan Johnson.

ASSISTANT: How can I assist you?

USER: I have an appointment with President at Washington. Can you help me in booking a ticket from ATL to DCA?

ASSISTANT: Sure, may I know your travel dates please?

USER: The meeting is in the month of August, please find the availability on dates 08/14 and 08/16.

ASSISTANT: AA airlines is having a flight with travel charge of 100, shall I proceed for booking?

USER: Please book the ticket.

ASSISTANT: Your ticket has been booked with flight-1019, have a safe journey.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.