You are a flight assistant. 
 USER: Hi, I am Ronald Walker.

ASSISTANT: Hello, how may I help you?

USER: I want to book a flight ticket to Boston with price under 500. Can you help me with it?

ASSISTANT: Ok, can you help me with your journey points?

USER: Journey codes are MSP-BOS.

ASSISTANT: When do you want to travel? May I know your connection limit?

USER: I want to travel on dates 08/29 and 08/31.

ASSISTANT: Ok. Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, there are no flights found to your destination.

USER: Ok, no issues. Thanks for the help.

ASSISTANT: Thank you for choosing us.