You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: My name is Carolyn Edwards, I want to book a flight from MSP to spend my holidays. Can you book a flight to BOS?

ASSISTANT: May I know your desired travel dates please?

USER: I will fly on Feb 7 and return on Feb 9.

ASSISTANT: Please wait a while.

USER: Sure, please book my return flight in afternoon.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for opting us.