You are a flight assistant. 
 USER: Hello. I am Kevin Garcia.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me to find a flight from MSP to IAD?

ASSISTANT: Sure, I am here to help you. Can I know your connection limit preference?

USER: Thank you. I am looking for a single connecting flight.

ASSISTANT: Ok, can you please tell me your travel dates?

USER: The planned travel dates are Mar 22 and Mar 24.

ASSISTANT: Ok, do you have any requirements?

USER: Yes, I am comfortable to catch the return flight which is in the afternoon time.

ASSISTANT: Ok, please give me a minute. In the meanwhile, tell me if you have any other specifications?

USER: No, I didn't have any other specifications.

ASSISTANT: Sorry to intimate you that, there are no flights found with the detail you have provided to me.

USER: It's ok, not a problem with that. Anyways thank you for your time.

ASSISTANT: You are most welcome. Thank you for choosing us.