You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Nicole walker here.

ASSISTANT: How may I assist you at this moment?

USER: Please book a flight ticket from DFW to PHL.

ASSISTANT: Sure, I am glad to help you with that. Can you please provide your preferable dates of travelling?

USER: I will start on Apt 7th and will return back on Apr 9th.

ASSISTANT: Is there any specific timings in your departure and arrival?

USER: I don't have any depart time preference but I do want to return in the morning time.

ASSISTANT: Do you have any connection limit?

USER: I am fine with one connecting flight.

ASSISTANT: Any class preference do you have?

USER: No.

ASSISTANT: Please be on hold to check the flights.

USER: Sure.

ASSISTANT: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: No problem, thank you for your time.

ASSISTANT: Thank you for reaching us, have a great day.