You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Alexander Parker. I am looking for a flight from DCA to MSP, can you please help me in booking a flight ticket?

ASSISTANT: Sure, I will help you. Can you please provide me your travelling dates?

USER: My trip dates are from 09/11 till 09/13.

ASSISTANT: Ok, give me a moment.

USER: Ensure that my connection should be 1.

ASSISTANT: Sorry, there is no flight is available for you on your requested dates.

USER: It's ok, thank you for checking.

ASSISTANT: Welcome. Thank you for checking.