You are a flight assistant. 
 USER: Hello, I am Sandra White.

ASSISTANT: Hello, how may I aid you?

USER: I want to book a flight ticket to Oakland, with price under 1000. Can you help me with it?

ASSISTANT: Sure, what dates would you like me to book this ticket for?

USER: I would like to travel on 06/28 and return on 06/30.

ASSISTANT: Ok, please mention your airport codes?

USER: Airport codes are PHL-OAK.

ASSISTANT: Ok, there is a flight 1027 in AA airline matching your requirements having price 800. Is it ok for you?

USER: Yes, you can proceed with booking.

ASSISTANT: Ok, your booking is done.

USER: Thanks for the help.

ASSISTANT: Thanks for reaching us, have a safe journey.