You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

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

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

USER: My trip dates will be July 22nd to July 24th.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any airline preference?

USER: No.

ASSISTANT: Do you have any other specifications?

USER: No, thank you for asking.

ASSISTANT: Please forward your name.

USER: I am Emma Robinson.

ASSISTANT: Sorry, there are no flights found on your specified trip dates.

USER: Its ok, thank you.

ASSISTANT: Thank you for availing us.