You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I would like to book a ticket from CLT to SEA, can you please help me with that?

ASSISTANT: Sure, may I know the travelling dates?

USER: The travel dates are from 01/20 to 02/01.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: Are there any other specifications?

USER: I prefer economy class.

ASSISTANT: May I know your name?

USER: Sandra martin here.

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

USER: That's ok, thank you for your help.

ASSISTANT: Thank you for opting us.