You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Could you please book a flight ticket from EWR to OAK as I want to attend an Innovation festival?

ASSISTANT: Sure, can you please share your journey dates?

USER: My journey dates are Oct 23 and Oct 25.

ASSISTANT: Can you please mention your connection limit?

USER: I need a single connecting flight.

ASSISTANT: Do you have any more specifications in your journey?

USER: I want to return in the morning.

ASSISTANT: May I know your name please?

USER: My name is Nicholas Green.

ASSISTANT: Sorry we did not find any flights on your preferred routes, due to bad weather conditions.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for choosing us.