You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Myself Donald Allen. Will you help me in booking the flight ticket from MSP toDCA?

ASSISTANT: Sure, I will help you with that. Can  I have your travel dates please?

USER: My travelling dates are 06/28 and 06/30.

ASSISTANT: Ok, please wait a moment to check flight availability.

USER: Ok, I will wait for your response.

ASSISTANT: Sorry Allen, no flight is available to you on your dates due to weather conditions.

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

ASSISTANT: Thank you for choosing us, have a good day.