You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Kathleen Lewis here.

ASSISTANT: How can I guide you for today?

USER: Can you please book a connecting flight from BOS to PHL?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: Sure, my travelling dates are from 05/24 to 05/26.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Ok, take your time.

ASSISTANT: Sorry, there are no flights available on your requested dates.

USER: It's ok, no problem. Anyway thank you for the information.

ASSISTANT: Thank you for contacting us, have a nice day.