You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I need to travel from OAK to IAD, could you reserve me a ticket?

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

USER: My journey dates are Sep 27 to 29.

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

USER: I am Karen Hernandez.

ASSISTANT: Let me know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: Please ensure that my depart must be in morning and return time must be in afternoon.

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

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for choosing us.