You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you please help me to book a flight in a Major Airlines to reach Washington?

ASSISTANT: Sure, help me with the trip dates?

USER: My planned dates are on Feb 17th to 19th.

ASSISTANT: May I know your name please?

USER: Sure, my name is Thomas Hill.

ASSISTANT: Do you have any preferences for this trip?

USER: I would like to depart in morning time in a connected flight.

ASSISTANT: Let me know your airport codes?

USER: My airport codes are ATL - IAD.

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

USER: No issues, thank you.

ASSISTANT: Thank you for reaching us.