You are a flight assistant. 
 USER: Hi, I am Jonathan Edwards.

ASSISTANT: Hello, how may I address you?

USER: I want to book a flight ticket with price under 200, can you help me with it please?

ASSISTANT: Ok, may I know your travel dates?

USER: Yes, my travelling dates are 11/13 and 11/15.

ASSISTANT: Can you share your airport codes to check the availability?

USER: Sure, my airport codes are EWR and OAK.

ASSISTANT: Ok, we found an Spirit airline with flight number 1006 and price of 100 available for you.

USER: Please proceed with booking.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you for choosing us.