You are a flight assistant. 
 USER: Hello, I am Donna Lopez.

ASSISTANT: Hello, how may I aid you today?

USER: I am planning to visit Korean war veterans memorial in Washington DCA. Can you help me to book a connecting flight?

ASSISTANT: Sure, may I know your source airport code?

USER: My source is from Philadelphia, PHL.

ASSISTANT: Can you please share your trip dates with us?

USER: My trip dates are Nov 13 and 15.

ASSISTANT: We found a flight with single connection in Spirit airline.

USER: Please reserve my seat.

ASSISTANT: Your ticket has been confirmed with number 1019.

USER: Thank you for helping me.

ASSISTANT: Thank you.