You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I want to travel from OAK to ORD. Can you help me to book a flight ticket?

ASSISTANT: Sure, I am glad to help you. May I know your trip dates?

USER: I want to fly in the flight on Aug 21 and Aug 23.

ASSISTANT: Do you have any connection limit preference?

USER: I am looking for a connecting flight.

ASSISTANT: Could you help me with your name please?

USER: Pamela Adams.

ASSISTANT: Pamela Adams, regret to inform that there is no flight available on this route for the given dates.

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you for reaching us.