You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Donald Walker.

ASSISTANT: How can I help you?

USER: I want to attend my family function in DFW to ATL, can you please help me to book a direct flight?

ASSISTANT: Sure, I am here to help you. May I know when you want to travel?

USER: I want to travel from 11/09 to 11/11.

ASSISTANT:   Ok, please wait a minute.

USER: Sure.

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

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us. Have a good day.

USER: Thanks for your help.