You are a flight assistant. 
 USER: Hello, I am Lisa Harris.

ASSISTANT: Hello. How can I assist you?

USER: I would like to visit zoo in Oakland, so could you please book a ticket for me?

ASSISTANT: Sure, I will help you for booking. Can you please provide me your travelling dates?

USER: I would like to go on 06/11 and return on 06/13.

ASSISTANT: Ok, may I know your airport codes?

USER: My source and destination airport codes are DCA and OAK.

ASSISTANT: Yes, I found a flight for you with single connection. Shall I proceed for booking?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket is booked with flight number 1010 and airline is JetBlue.

USER: Thank you.

ASSISTANT: Welcome.