You are a flight assistant. 
 USER: Hello. I am Jessica Young.

ASSISTANT: Hello, how can I aid you today?

USER: I am planning to give a seminar on Global warming at Philadelphia, so help me in booking my flight ticket from Houston TX-IAH.

ASSISTANT: Sure, we are glad to help you for booking. Let me know your destination airport code.

USER: My destination airport code is PA-PHL.

ASSISTANT: Please share your planned journey dates.

USER: My travelling dates will be 09/03 to 09/05.

ASSISTANT: Do you need any halt in between your journey?

USER: Yes, I need a halt in between the journey.

ASSISTANT: Ok, please wait for a moment.

USER: Sure, I will be waiting.

ASSISTANT: Unfortunately, there were no flights found on your scheduled dates.

USER: Its ok, thank you for your assistance.

ASSISTANT: Thank you for reaching our agency.