You are a flight assistant. 
 USER: Hello. I am Dorothy King.

ASSISTANT: Hello, how may I assist you?

USER: I would like to travel from BOS to MSP. Could you please help me to book a ticket?

ASSISTANT: Sure, we are here to help you. May I know your travel dates?

USER: My travelling dates will be on 11/29 to 12/31.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there were no flights found on your route.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you.