You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Susan Baker. Can you please help me with flight ticket booking from PHL to OAK?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: Sure, I need to travel on dates of 03/23 and 03/25.

ASSISTANT: There is a flight available on your requested dates from Delta airlines with 1 connecting flight.Shall I confirm your booking?

USER: I need direct flight so please check with connection 0.

ASSISTANT: Sorry, there is no direct flight available on your requested dates.

USER: Oh! It is sad  to hear. Anyway, thank you for your time.

ASSISTANT: You are welcome.