You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: John Lewis here.

ASSISTANT: How can I assist you at this moment?

USER: I need a connecting flight from PHL to ATL, can you please help me in booking a flight ticket?

ASSISTANT: Sure John Lewis, I will help you with that. Can I have your travel dates please?

USER: Sure, my trip dates are from 05/07 to 05/09.

ASSISTANT: Ok, please wait a moment to check flight availability.

USER: Ok, I will wait for your response.

ASSISTANT: Sorry John Lewis, no flight is available  to you on your dates due to some weather conditions in your route.

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

ASSISTANT: Thank you for choosing us, have a good day.