You are a flight assistant. 
 USER: Hello, I am William Walker.

ASSISTANT: Hello. How may I be of your service?

USER: I would like o buy a plane ticket with the cost under 500.

ASSISTANT: Sure, please let me know your connection preference.

USER: Yes, I would feel comfortable if I get a break in between.

ASSISTANT: Kindly share your exact airport codes.

USER: I would leave from Seattle, WA - SEA as it is my nearest airport and would arrive at New York, NY - LGA.

ASSISTANT: Can I know your planned travelling dates to proceed further?

USER: I need to reach there by 10/31 as I have an interview on the next day and I would come back on 11/02.

ASSISTANT: Thanks for sharing details, we found an UA airline matching your details with one connection.

USER: That's great, please proceed.

ASSISTANT: Your booking has been processed successfully with the flight number-1003 and the price 100.

USER: Thanks for your support.

ASSISTANT: You're welcome, happy journey.