You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I am Nicholas Perez, I need a direct flight for my journey to PHL from HOU for attending an event over there. Can you please help me to book a flight ticket?

ASSISTANT: Sure, I will help you in booking the ticket.

USER: Thank you for considering my request.

ASSISTANT: May I know your travelling dates please?

USER: Sure, my travelling dates are 02/16 and 02/18.

ASSISTANT: Sorry, there are no fights found.

USER: Not an issue, anyway thank you for the information.

ASSISTANT: Thank you for choosing us.