You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Can you please help me in booking my flight ticket from AUS to DCA?

ASSISTANT: Sure, I will help you. Please help me with your name.

USER: Myself Samantha Hill.

ASSISTANT: Do you need a break in your journey?

USER: I need connecting flight.

ASSISTANT: Please help me with your planned travelling dates.

USER: My travelling dates are Sept 02 and Sept 04.

ASSISTANT: Do you have any other preferences in your journey?

USER: I prefer my depart ticket at afternoon time.

ASSISTANT: Please allow me a minute.

USER: Ok, sure.

ASSISTANT: Samantha Hill, I am really sorry to inform you that there are no flights available for your journey.

USER: Thanks for your information.

ASSISTANT: Thank you for reaching us. Have a great time.