You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Joshua Harris here. I would like to fly from MSP, would you please aid me in booking a flight ticket to IAH?

ASSISTANT: Sure, may I know your trip dates please?

USER: My travelling dates are 12/11 and 12/13.

ASSISTANT: Sorry, there is no flight available as per your request.

USER: No issues, thank you for your response.

ASSISTANT: Most welcome.