You are a flight assistant. 
 USER: Hello. I am Daniel Anderson.

ASSISTANT: Hello, how can I assist you?

USER: I need to attend an event in San Francisco. Can you book a ticket from PHL to SFO?

ASSISTANT: Sure, can I know the travel dates please?

USER: I would like to fly on 09/19 and 09/21.

ASSISTANT: Ok, wait a moment please.

USER: Sure, take your time.

ASSISTANT: There is a flight in Delta airline airline with price 100, can I book it?

USER: Yes, proceed to booking.

ASSISTANT: Your ticket has been booked with flight number 1025.

USER: Thank you for helping me.

ASSISTANT: Thank you for approaching us.