You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I be of your help?

USER: I am John Thomas. I am looking for a trip from ATL to DCA, can you help me with booking?

ASSISTANT: Sure, we are glad to assist you in booking.

USER: Thank you.

ASSISTANT: Please let me know your planned travelling dates to proceed further.

USER: Sure, my preferable dates are from Nov 18 to 20.

ASSISTANT: May I know your depart and arrival timings?

USER: I want to return in the morning time.

ASSISTANT: Is there any other specifications?

USER: I need a connecting flight.

ASSISTANT: Ok, please wait a moment.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for availing us.