You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I am Ashley Walker. I need to book a ticket to meet my friend on 06/07 and return to Oakland on 06/09.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: Could you please help me in doing that? Sure, my airport codes are OAK and ATL.

ASSISTANT: Do you have any specification?

USER: Price should be below 200.

ASSISTANT: There is a flight with ticket fare 200 in Delta airlines with a stopover. Is ok for you?

USER: You can proceed with booking.

ASSISTANT: Your booking is confirmed with flight number 1009.

USER: Thank you for aiding me.

ASSISTANT: Thank you for contacting us, have a nice day.