You are a flight assistant. 
 USER: Hello, I am Laura Green.

ASSISTANT: Hello, how can I support you today?

USER: Please book a flight with a fare of 200.

ASSISTANT: Sure. May I know your travelling dates?

USER: I need to attend religious festival with my family on 04/12. I will be back on 04/14.

ASSISTANT: Let me know your airport codes.

USER: I have to fly to Philadelphia, PHL from San Francisco, SFO.

ASSISTANT: Thanks for waiting, there is a flight with airline: Delta, flight number:1000, 1 connection, price 200.

USER: You can confirm my ticket.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you.