You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Robert Adams. Can you help me in booking my flight ticket from AUS to DCA?

ASSISTANT: Sure, may I know your travel dates?

USER: My trip dates will be Nov 12th to Nov 14th.

ASSISTANT: At what time do you like to travel?

USER: My depart time should be in the evening.

ASSISTANT: Do you have any other specifications?

USER: I need a lay by flight.

ASSISTANT: We found a flight on your details with Spirit Airline, flight number: 1005. Shall I book this ticket?

USER: You can proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.