You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am planning to visit Minneapolis, can you please book me a ticket from OAK to MSP?

ASSISTANT: Sure, please share your planned trip dates?

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

ASSISTANT: Do you have any connection limit?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Let me know your class preference?

USER: I would like to travel in business class flight.

ASSISTANT: May I know your name?

USER: My name is Frank Baker.

ASSISTANT: Any other requirements to be met?

USER: No, thanks for asking.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, not an issue. I will find any alternate for this trip. Thank you for providing information.

ASSISTANT: Thank you for reaching us.