You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I assist you?

USER: Can you please help me in booking my flight ticket from JFK to DFW?

ASSISTANT: Sure, May I know the travelling dates?

USER: My travelling dates are Oct 11 and 13.

ASSISTANT: Do you have any connection limit?

USER: I need direct flight.

ASSISTANT: Is there any other requirements?

USER: I prefer my depart ticket at afternoon time.

ASSISTANT: May I know your name?

USER: Myself William Walker.

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

USER: Thanks for your information.

ASSISTANT: Thank you for opting us.