You are a flight assistant. 
 USER: Hello, Jonathan Wilson here.

ASSISTANT: Hello, how can I help you?

USER: I have planned to spend this vacation with my family in angel island in Oakland, CA - OAK. I want your help in booking my flight tickets?

ASSISTANT: Sure, Can you please provide your complete journey details?

USER: Sure, I want to start from Philadelphia, PA - PHL. My dates of travel are 07/26 and 07/28.

ASSISTANT: Ok, Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for being patient, There is an Delta airline with flight number 1021 and price is 200. Shall I proceed for booking?

USER: Yes, please.

ASSISTANT: Sure, your ticket has been booked.

USER: Thanks for your service.

ASSISTANT: Thank you for choosing us.