You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: My name is Jessica Robinson. I would like to travel from PHL to HOU, could you help me out?

ASSISTANT: Sure, may I know your planned dates please?

USER: My preferable dates are from 09/11 to 09/13. Please check for direct flights.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: That's ok.

ASSISTANT: Thank you for approaching us.

USER: Thank you, have a good day.