You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: Can you please help me in booking a flight ticket to IAD from IAH in the month of August?

ASSISTANT: Sure, May I know the journey dates?

USER: Sure, my journey dates are Aug 9 and Aug 11.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight for my journey.

ASSISTANT: Is there any other requirements?

USER: I need a business class flight.

ASSISTANT: May I know your name?

USER: Ok, my name is Michelle Mitchell.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for availing us.