You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What service do you require from our flight agency?

USER: Can you please help me in booking a flight ticket to PHL from SFO?

ASSISTANT: Sure, I am here to assist you with the ticket booking. Shall I know your travel dates please?

USER: My travel dates are from Jan 10 to Jan 12.

ASSISTANT: Ok, please mention your airlines preference.

USER: I am comfortable with any airline.

ASSISTANT: Ok, can you please let me know your preference about the connection limit?

USER: I need a connecting flight.

ASSISTANT: May I know your name to proceed further?

USER: I am Samantha Moore.

ASSISTANT: I am really sorry to intimate you that, there are no flights running in this route due to some climatic changes.

USER: Ok, no problem. Thank you.

ASSISTANT: Most welcome. Thank you for opting us.