You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I want to book a ticket from BOS to MSP. Could you book a ticket?

ASSISTANT: Sure, can you please share your journey dates?

USER: Departure is Feb, 18 and return date is Feb, 20.

ASSISTANT: Do you have any connection limit?

USER: I prefer connecting flight.

ASSISTANT: Any other requirements to be met?

USER: I would like to depart in the evening.

ASSISTANT: May I know your name?

USER: My name is Dorothy Hernandez.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Thank you.