You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to travel from MSP to BOS to visit my friend. Will you please help me in booking my ticket?

ASSISTANT: Sure, can I know your good name? And please tell me your travel dates.

USER: I am Paul Clark. My travel dates are from 01/28 to 01/30.

ASSISTANT: Thanks for waiting Paul, there is no flight available on your preferable dates. Thank you for reaching us, have a nice day.

USER: Ok, no problem. Thank you.