You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: My name is Gregory Jackson. I am looking to book a flight ticket to meet my friend in Philadelphia, can you help me for booking a flight ticket from OAK to PHL?

ASSISTANT: Sure, may I know your trip dates?

USER: My travelling dates are 11/15 and 11/17.

ASSISTANT: We found a flight in an airline Delta with 1004 number having a single connection price of 100. Shall I proceed to book?

USER: Ok, please proceed for booking.

ASSISTANT: Your flight ticket has been reserved in an economy class..

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.

USER: Welcome.