You are a flight assistant. 
 USER: Hello. I am Donald Clark.

ASSISTANT: Hello, how may I assist you?

USER: We planned to visit the Kinder water fall which is in Houston HOU, could you please help me in booking a ticket from SEA?

ASSISTANT: Sure, we are here to make your journey comfort. Do you need any halt in your journey?

USER: I need a halt in between the journey.

ASSISTANT: May I know your journey dates?

USER: My travelling dates are 08/16 and return on 08/18.

ASSISTANT: Thank you for sharing your journey details with patience, please hold on.

USER: Sure.

ASSISTANT: No flights found on your journey locations.

USER: No problem, thank you for your valuable information.

ASSISTANT: Thank you for choosing us, have a nice day.