You are a flight assistant. 
 USER: Hello. I am Betty Nelson.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I want to attend my sister wedding at CA-OAK with my family. Can you book a ticket from PA-PHL?

ASSISTANT: Sure, I can help you. May I know your planned dates of travel?

USER: My planned dates are 01/01 and 01/03.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Spirit airline plane is available for you with a fare of 100 only. Shall I proceed to book?

USER: Ok, you can proceed with booking.

ASSISTANT: Your booking with Spirit airline is done and the flight number is 1000.

USER:  Thank you for booking.

ASSISTANT: Thanks for availing our service.