You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: My name is Lisa Rodriguez, help me to book a direct flight to visit Space and Science Center at Oakland.

ASSISTANT: Sure, I am here to help you. Could you please help me with your travelling dates?

USER: I will travel on 07/12 and return on 07/14.

ASSISTANT: May I know your travelling airport codes?

USER: My source point is PA-PHL and my destination is CA-OAK.

ASSISTANT: May I know your price limit?

USER: My budget is 5000.

ASSISTANT: There is a Delta 1004 airline with fare of 800 and a halt in between the journey. Shall I proceed with booking?

USER: Please proceed with booking.

ASSISTANT: Your booking has been confirmed on name of Lisa Rodriguez.

USER: Thank you for helping me with booking.

ASSISTANT: Thank you for choosing us.