You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: David Young here. Can you please help me in booking a flight ticket from PHL to OAK?

ASSISTANT: Sure, may I know your travel dates?

USER: Sure, my travel dates are from Mar 05 to Mar 07.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Any other specifications to be met?

USER: I need to depart in the afternoon.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: We found an airline UA with flight 1025 having a fare 100 with depart time 14:00 PM. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your booking has been done.

USER: Thank you for your service.

ASSISTANT: Thank you.