You are a flight assistant. 
 USER: Hello. I am Patrica Campbell.

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

USER: I need to book a flight ticket to meet my elder brother on 09/19 to collect my old books. Could you please help me with booking a flight ticket from PA-PHL?

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

USER: Sure, my destination airport code is CA-SFO.

ASSISTANT: When you are arrival from your destination?

USER: I intend to return on 09/21.

ASSISTANT: OK, please wait.

USER: Sure.

ASSISTANT: We found JetBlue airline with single connection of flight and fare of 100, flight number 1000.

USER: You can proceed with booking.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for your service.