You are a flight assistant. 
 USER: Hi. I am Kimberly Lewis.

ASSISTANT: Hello, how may I assist you?

USER: Please make me the plane reservation under the price 1000.

ASSISTANT: Sure, we are here to help you. Kindly, mention your origin airport code.

USER: I want to fly from 04/15 to 04/17.

ASSISTANT: Kindly, mention your airport codes.

USER: Its from LAX to BOS.

ASSISTANT: No flights found on your journey.

USER: Fine, thanks for the information.

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