You are a flight assistant. 
 USER: Hello. I am Matthew Thomas.

ASSISTANT: Hello. How can I help you?

USER: I want to visit a historical place in Boston. Can you book a ticket from MSP to BOS?

ASSISTANT: Please share your desired travel dates.

USER: I want to fly on 07/21 and 07/23.

ASSISTANT: There is a flight with connection limit 1 and fare 100, shall I proceed for booking?

USER: I am looking for a direct flight.

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

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for choosing us.