You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I would like to reserve a flight ticket from IAD to MSP, can you please help me?

ASSISTANT: Sure, can you please provide me your itinerary travel dates?

USER: Sure, my planned travelling dates are Dec, 15 and 17 respectively.

ASSISTANT: Is there any class preference?

USER: I am comfortable to travel in any class.

ASSISTANT: Is there any connection limit?

USER: Flight has to be with single connection please?

ASSISTANT: Are there any more preferences that you want to avail?

USER: No, thank you for asking.

ASSISTANT: May I know your name please?

USER: Brandon Hall here.

ASSISTANT: Give me a moment.

USER: Sure, I will wait.

ASSISTANT: I regret to say that there is no connecting flight.

USER: Ok, not an issue.Thank you for your information.

ASSISTANT: Thank you for reaching us.