You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I want to attend my friend's marriage, for that I want to travel from ORD to OAK.

ASSISTANT: Sure, can you mention your trip dates please?

USER: Trip dates are 05/29 and 05/31.

ASSISTANT: May I know your name for booking?

USER: I am David Evans.

ASSISTANT: David, there is a flight for you in JetBlue airline, shall I book it?

USER: You can book.

ASSISTANT: Your ticket has been booked with flight number 1011.

USER: Thank you for helping.

ASSISTANT: You are welcome.