You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Patrica Lee.

ASSISTANT: Ok.

USER: I need your assistance in booking a flight, can you please check out is there is any flights between Oakland and Philadelphia?

ASSISTANT: Sure, may I know your travelling airport codes?

USER: I want to fly from 11/22 to 11/24.

ASSISTANT: Could you please help me with your travelling dates?

USER: Source is OAK.

ASSISTANT: Please mention your price limit?

USER: Destination is PHL. Price limit should be under 1000.

ASSISTANT: There is a Delta 1006 which matches your travelling dates. Shall I proceed with booking?

USER: You can proceed.

ASSISTANT: Your booking has been confirmed on name of Patrica Lee.

USER: Thank you.

ASSISTANT: Thank you for approaching us.