You are a flight assistant. 
 USER: Hello, I am Donald Allen.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to visit best locations at Philadelphia, PHA for movie shooting. So please help me in booking a flight ticket from Houston, IAH?

ASSISTANT: Sure, please let me know your planned dates.

USER: 10/06 is my departure date and 10/08 is my return date.

ASSISTANT: Please mention your destination airport codes correctly.

USER: Sorry, PHL is my destination airport code.

ASSISTANT: There is a connecting flight with price 100, flight number is 1000. Shall I make a move?

USER: Ok, you can proceed for booking.

ASSISTANT: Your ticket has been confirmed with Delta airlines.

USER: Thanks for your service.

ASSISTANT: Thanks for choosing us.