You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am a singer and would like to participate in the live concert in DEN, can you please aid me in booking a flight ticket from  DCA?

ASSISTANT: Sure, I am here to help you out in booking the flight ticket. Please provide me your trip dates.

USER: Sure, I want to depart on May 16 and arrive on May 18.

ASSISTANT: May I know your name to proceed further?

USER: Sure, I am Sharon Evans.

ASSISTANT: Here is a connecting flight in economy class with airfare about 200, can I proceed with it?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been booked with 1007 flight in AA airlines.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching us.