You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I would like to attend an event at Washington, please help me in booking a ticket from AUS to DCA.

ASSISTANT: Sure, can you share your trip dates?

USER: My planned travel dates are on May 27 and May 29.

ASSISTANT: Do you have any preferences?

USER: I need a flight with single connection.

ASSISTANT: May I know your name?

USER: My name is Gary Anderson.

ASSISTANT: There is a connecting flight with number 1004 in airline Hawaiian, the fare is 100 in economy class. Can I book it?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket is reserved.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.