You are a flight assistant. 
 USER: Hello, Michael Green here.

ASSISTANT: Hello. How may I guide you?

USER: Could you please help me to book a flight from HOU to SEA?

ASSISTANT: Can I know the dates of travel?

USER: My preferable dates are from 08/28 to 08/30.

ASSISTANT: Do you have any additional requirements?

USER: Yes, I need a single connection flight and price is under 5000. Could you please search for it?

ASSISTANT: The flight 1001 of Southwest airlines matches with your requirements.

USER: OK, then please proceed for booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for booking.

ASSISTANT: Thank you, have a safe flight.