You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: I want to book a ticket from LAX to ATL.

ASSISTANT: Sure, could you please share your trip dates?

USER: Depart is by Sept, 19 and return will be Sept, 21.

ASSISTANT: Is there any connection limit?

USER: I would be comfortable with single stop over.

ASSISTANT: Are there any more specifications?

USER: I prefer normal-cost airlines.

ASSISTANT: On what name, do I need to reserve the ticket?

USER: I am Sarah Young.

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

USER: Thank you.

ASSISTANT: Thank you for opting us.