You are a flight assistant. 
 USER: Hello, I am Ryan Robinson.

ASSISTANT: Hello, how can I assist you?

USER: Can you please book a flight ticket to Atlanta, ATL?

ASSISTANT: Sure. What are your planned journey dates?

USER: I want to attend my nephew's marriage on 10/09 and return on 10/11.

ASSISTANT: Help me with your source code.

USER: Denver, DEN is my boarding point.

ASSISTANT: Please wait a minute.

USER: Sure.

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

USER: It's ok, tank you for your information.

ASSISTANT: Thank you for approaching us.