You are a flight assistant. 
 USER: Hi, I am Pamela Wilson.

ASSISTANT: Hello, how may I assist you today?

USER: I have a plan to visit my grand parents house at Charlotte, please book a flight ticket under price 500.

ASSISTANT: Sure, may I know your airport codes please?

USER: My source code is BOS and destination code is CLT.

ASSISTANT: When you are willing to travel?

USER: My travelling dates are from 01/07 to 01/09.

ASSISTANT: Do you have any other requirements?

USER: I need a connecting flight within my journey.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Thanks for waiting. Sorry, there are no flights available with your budget.

USER: No issues, thanks for the information.

ASSISTANT: Thank you for reaching us.