You are a flight assistant. 
 USER: Hi, I am David Harris.

ASSISTANT: Hello, do you need any help from my side?

USER: Could you please help me to book a flight ticket from BOS to attend an exam in MSP?

ASSISTANT: Sure, may I know your airborne and recur planned travel dates?

USER: I would like to start on July 10th and my return date will be on July 12th.

ASSISTANT: Do you need economy or business class flight?

USER: I don't have any class preference.

ASSISTANT: Ok, let me check with your details in our booking portal.

USER: Ok, make sure that I need to depart in the evening.

ASSISTANT: I regret to say that no flight is moving on your travel dates in the evening time due to weather conditions.

USER: No issues, I'll choose any alternative to reach my destination. Thank you.

ASSISTANT: You are most welcome and thank you for reaching our agency.