You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you at this moment?

USER: My name is Samantha Wright. I have a concert to attend at Philadelphia. Can you help me in booking a ticket from IAH to PHL?

ASSISTANT: Sure, I am happy to help you in booking flight ticket. Could you please let me know your preferable travel dates for booking flight ticket?

USER: Please check for the availability on dates 12/08 and 12/10.

ASSISTANT: Ok, please hold on a moment, I will check flight availability in this route.

USER: Ok. I am looking for a direct flight.

ASSISTANT: Sure. Sorry for the inconvenience no direct flights are available in this route as per your requested dates.

USER: It's ok, no issues. Thank you for the information.

ASSISTANT: Thank you for reaching us, have a nice day.