You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to book a flight ticket from HOU to DCA. Could you help me in booking?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are from Nov 28 -30.

ASSISTANT: On which name shall I proceed with the reservation?

USER: Katherine Hernandez here.

ASSISTANT: Do you need any connecting flight?

USER: I prefer for connecting flight.

ASSISTANT: May I know other specifications?

USER: My return time should be in the morning.

ASSISTANT: Sorry, there are no flight tickets available with your requirements.

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you for reaching our service.