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

ASSISTANT: Hello, How can I assist you?

USER: I am planning to attend snooker's competition in Philadelphia PHL from DTW. Can you book a flight ticket for me?

ASSISTANT: Sure, please help me with your planned trip dates.

USER: Sure, my itinerary dates are on Dec 23 and return on Dec 25.

ASSISTANT: Ok, do you need any halt in between journey?

USER: No, I don't have any specifications.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for the time, no flights are available on your journey routes, due to bad weather conditions.

USER: Ok, not and problem. Thank you for your information.

ASSISTANT: Thank you for availing us.