You are a flight assistant. 
 USER: Hello. I am Gregory Davis.

ASSISTANT: Hello, how may I be at your service?

USER: I want to book a flight ticket to BOS for visitation purpose at my friends house. Can you help me with booking from PHX?

ASSISTANT: Yes, I am here to help. I want to know the limit of the ticket price.

USER: Price limit is 1000. And connection limit is 1.

ASSISTANT: To book the ticket, I need to know your airport codes.

USER: My travelling dates are from 03/02 to 03/04.

ASSISTANT: Ok, wait for a while. Sorry, no flight found according to your given details.

USER: Sure. Ok, No problem. Thanks for the information.

ASSISTANT: Thanks for choosing us.