You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you for today?

USER: I have planned to go to Philadelphia Zoo, so please help me to book a flight ticket from SEA.

ASSISTANT: Sure, may I know the destination airport code? What were the travelling dates of your journey?

USER: The destination airport code is PHL. My travelling dates are 05/09 and 05/11.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: There is a flight 1024 in Southwest airline has the price 100.Can I proceed?

USER: Yes, please proceed.

ASSISTANT: May I know your name for booking the flight ticket?

USER: My name is Susan Collins.

ASSISTANT: Your ticket has been booked, have a safe journey.

USER: Thank you very much for helping me and your quick response.

ASSISTANT: You are welcome.