You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,.

USER: I am Paul Moore.

ASSISTANT: How can I assist you?

USER: I want to attend Northern Nights Music Festival in Boston, BOS. Can you help me in booking from Philadelphia, PHL? I need single connection.

ASSISTANT: Sure, I will help you in booking.

USER: Price should be under 200.

ASSISTANT: Share your travel dates.

USER: My journey dates on 04/21 to 04/23.

ASSISTANT: Thank you for your information. There is no flight found with your requested dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for availing us.