You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I need you to book a flight ticket, please help me.

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: January 8 and 10 are my planned travelling dates.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: OAK and MSP are the respective airport codes.

ASSISTANT: Are you looking for a connecting flight or direct flight?

USER: I would like to fly in a connecting flight.

ASSISTANT: Do you have any class preferences?

USER: I am good to fly in any class.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: I wish to return in the morning.

ASSISTANT: Can you please provide your name to proceed further?

USER: My name is Frank Baker.

ASSISTANT: Sorry, there are no flights available at your request.

USER: That's ok. Thanks for your time.

ASSISTANT: Thank you for contacting us, have a nice day.