You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Alexander Moore here.

ASSISTANT: How can I aid you?

USER: I want to book a flight ticket from BOS to MSP. Can you help me in that?

ASSISTANT: May I know your travel dates?

USER: My trip dates are Apr 10 to Apr 12.

ASSISTANT: Do you have any preferences?

USER: My return should be in the afternoon.

ASSISTANT: Do you have any other preferences?

USER: I need a connecting flight.

ASSISTANT: Sorry, I did not find any flights for you.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.