You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: My name is Brian Williams. I need to book a flight ticket from OAK to Detroit, DTW. Will you help me in booking a flight ticket ?

ASSISTANT: Sure, I will help you with that. Can you please let me know your travelling dates?

USER: I would like to start my journey on Dec 03 and return back on Dec 05.

ASSISTANT: Ok, Is there any connection limit for you?

USER: Yes, I need one halt in between my journey.

ASSISTANT: Are you comfortable with economy class?

USER: I am comfortable with any class.

ASSISTANT: Thanks for providing details, we are unable to provide flights on your journey routes because of bad weather conditions.

USER: Ok, no problem. Anyway, thank you for the information.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your kind service.