You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I need to attend a business meeting at Philadelphia, can you please help me in booking a flight ticket from IAH to PHL?

ASSISTANT: Sure, I am here to help you with that. Can I know your planned trip dates?

USER: Sure, my planned travel dates are from May 13 to May 15.

ASSISTANT: Ok, do you have any other preference?

USER: I would prefer connecting flight for my trip.

ASSISTANT: May I know your name?

USER: Myself Larry Hernandez.

ASSISTANT: Please wait for a minute. Sorry to say that, there is no flight found on your name in our database.

USER: Sure. That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.