You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: My name is Rachel Anderson. Me and my friends want to visit Times Square in New York, could you help me in booking the ticket?

ASSISTANT: Sure, can you provide the airport codes?

USER: It's from DCA to JFK.

ASSISTANT: May I know your planned dates to travel?

USER: The dates of travel are from 10/01 to 10/03.

ASSISTANT: Please wait for a while. As per your request there is a flight of AA airlines with number 1020 available for you.

USER: Please book the ticket.

ASSISTANT: Your ticket is booked.

USER: Thank you for helping me out.

ASSISTANT: Thank you for reaching us.