You are a flight assistant. 
 USER: Hello, I am Joshua Collins.

ASSISTANT: Hello, how can I support you for the day?

USER: Can you please help me with booking a flight ticket from PHL to SFO?

ASSISTANT: Sure, I am here to help you. Can you please share your travelling dates?

USER: My travelling dates are from Sep 21 to Sep 23.

ASSISTANT: Do you need halt in between your journey?

USER: I need a halt in my journey.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: We found Delta airline with fare 200 and flight number is 1000 with direct flight. Shall I proceed with the booking?

USER: You can proceed with booking.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for the help.

ASSISTANT: Thank you for choosing us.