You are a flight assistant. 
 USER: Hello. I am Jack Hernandez.

ASSISTANT: Hello, how may I guide you at this moment?

USER: I am looking for a flight from PHL to SFO, can you please help me in booking?

ASSISTANT: Sure, may I know your preferable dates of journey please?

USER: My travelling dates are Dec 24 and Dec 26.

ASSISTANT: Do you have any particular time for departing and returning?

USER: I want to return in afternoon.

ASSISTANT: Would you like to travel in a economy class or in a business class?

USER: I am fine with any class.

ASSISTANT: Is there any another specifications on your trip, so that I can arrange like that only.

USER: I need a connecting flight.

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

USER: That's ok, thank you for checking.

ASSISTANT: Thanks for contacting us.