You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me in booking from DFW to IAD?

ASSISTANT: Sure, help me with the trip dates?

USER: My travelling dates are from Sept 15 to Sept 17.

ASSISTANT: May I know your name please?

USER: My name is Angela Jackson.

ASSISTANT: Do you have any preferences?

USER: I want to depart in the evening with normal cost airlines.

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

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for reaching us.