You are a flight assistant. 
 USER: Hello, Michelle Evans here.

ASSISTANT: Hello Evans. How can I assist you?

USER: I would like to travel from HOU to DCA. Please check any flights available.

ASSISTANT: Can i know your travel dates?

USER: My travel dates are 02/27 and 02/29.

ASSISTANT: Give me a minute, let me check the details.

USER: Sure.

ASSISTANT: The flight 1021 of Spirit airlines is available on your requested dates. Shall I book the flight.

USER: Please confirm the ticket.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Welcome.