You are a flight assistant. 
 USER: Hello, I am Brian Carter.

ASSISTANT:  Hello, how can I assist you today?

USER: I am planning to attend a music festival at Oakland, so can you please help me in booking?

ASSISTANT: Sure, we are perky to help you.

USER: Thank you.

ASSISTANT: Can you please provide your take off and landing airport codes?

USER: I am heading to Oakland, OAK from San Francisco, SFO.

ASSISTANT: Do you prefer any halt in between your journey?

USER: Yes, I prefer a halt in between my journey.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I want to travel on 12/24 and return on 12/26.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure.

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

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.