You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I am planning to visit a Hockey competition in Minneapolis MSP from IAD. Can you find a flight ticket for me?

ASSISTANT: Kindly mention your travelling dates?

USER: Ok, my planned trip dates are on May 10 and return on May 12.

ASSISTANT: Is there any connection limit for you?

USER: I need a single connecting flight.

ASSISTANT: May I know your name?

USER: Ok, I am Mark King.

ASSISTANT: Is there any another specifications on your trip?

USER: No, thanks for asking.

ASSISTANT: Sorry Mark King, we haven't found any flight based on your specifications.

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

ASSISTANT: Thanks for reaching us.