You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Catherine Thomas, I want to book a flight from AUS to MSP to attend family meeting. Can you book a flight for me?

ASSISTANT: Sure, on which dates would you like to travel?

USER: I will fly on May 28 and return on May 30.

ASSISTANT: Is there any class preference?

USER: No, I am fine with any class.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight and also return flight in afternoon.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry, there were no flights found to return in the afternoon.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for availing us.