You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Justin Miller here. I want to change my existing reservation due to some bad weather conditions.

ASSISTANT: Sure, we are here to help you. Please wait for sometime.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting, we are happy to inform you that there is a reservation found on your name. Can you please share your new journey dates?

USER: My travelling dates are 09/10 and 09/12.

ASSISTANT: Please share your airport codes.

USER: Sure, my origin airport code is MSP and destination code is DEN.

ASSISTANT: Let me know your connection limit.

USER: I preferred only direct flight.

ASSISTANT: Ok, please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Unfortunately, there are no flights available based on your details.

USER: No issues, thank you for your information.

ASSISTANT: Thank you for choosing us.