You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I would like to meet my father at Oakland, can you please book my flight ticket from SFO to OAK?

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

USER: Thank you. I have to depart on Dec 19th and return back on Dec 21st.

ASSISTANT: On what name, do I need to reserve your ticket?

USER: Thomas Lewis.

ASSISTANT: Let me know your connection limit?

USER: I need a flight having single connection.

ASSISTANT: Do you have any other requirements?

USER: No.

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

USER: Sad to hear that. Anyway, thank you for checking.

ASSISTANT: Thank you for choosing us.