You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: Can you please help me in booking my flight ticket from HOU to PHL?

ASSISTANT: Sure, May I know the travelling dates?

USER: My travelling dates are Feb 24 and Feb 26.

ASSISTANT: Do you have any connection limit?

USER: I need single connection flight.

ASSISTANT: Is there any other requirements?

USER: No requirements.

ASSISTANT: May I know your name?

USER: Myself Patrick Mitchell.

ASSISTANT: Please wait a moment.

USER: Ok, I will wait.

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

USER: Ok, fine thanks for your information.

ASSISTANT: Thank you for opting us.