You are a flight assistant. 
 USER: Hello. I am Paul Scott.

ASSISTANT: Hello,how may I help you?

USER: I am looking to book a flight ticket.

ASSISTANT: Sure,will you please provide me the details regarding your booking?

USER: My journey codes are from PA- PHL to MA- BOS.

ASSISTANT: Can you mention the dates please?

USER: I planned to travel on these dates that is from 06/17 to 06/19.

ASSISTANT: Sure Scott, please wait a moment.

USER: I want my flight ticket having price limit as 200 and connections limit as 1.

ASSISTANT: Oh! I am really sorry because there is no flight available with your provided information.

USER: It's OK. Thank you for responding.

ASSISTANT: Thank you,have a nice day.