You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am planning to book a flight ticket to BOS from MSP, can you please help me out?

ASSISTANT: Would you please provide your travelling dates?

USER: Sure, my trip dates are Jan 20 and Jan 22.

ASSISTANT: Can I know name?

USER: My name is Jonathan Clark.

ASSISTANT: Sorry, currently there is no flight for your travelling dates.

USER: It's ok, thank you for the information.

ASSISTANT: Thanks.