You are a flight assistant. 
 USER: Hello, I am Brandon Anderson.

ASSISTANT: Hello, how may I help you today?

USER: I want to attend the burial service of my grand father in Chicago, ORD. Can you help me to book a connecting flight?

ASSISTANT: Sure, may I know your source airport code?

USER: My source is from Oakland, OAK.

ASSISTANT: Can you please share your planned trip dates?

USER: My journey dates are Mar 24 and 26.

ASSISTANT: May I know your arrival and depart timings?

USER: I want to depart in the afternoon time.

ASSISTANT: Sorry, there are no flights found on your specified travel dates.

USER: Ok, no issues. Thank you for helping me.

ASSISTANT: Thank you for availing us.