You are a flight assistant. 
 USER: Hello. I am Patrick Evans.

ASSISTANT: Hello, how may I serve you today?

USER: I have planned to visit my grand parents house in this holidays after a long time, can you please help me with booking a flight ticket within price 200?

ASSISTANT: Sure, do you prefer a way station in between your journey?

USER: Yes, I will prefer a way station.

ASSISTANT: Ok, Please share your source and destination airport codes.

USER: Sure, I want to fly from BOS to LAX.

ASSISTANT: Could you please help me with your journey dates?

USER: Yes, my preferable dates are 07/13 and 07/15.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: Thank you for waiting, we found a flight in Hawaiian airline of flight number 1008 matches given criteria. Shall I confirm your booking?

USER: That's great, book it for me.

ASSISTANT: Your booking has been confirmed with a fare 100.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us.