You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you now?

USER: Dorothy Clark here. I want to change my existing reservation due to heavy wind fall. can you help me for this one.

ASSISTANT: Sure, I am here to help you with that. Please, wait for while to check the status of your reservation.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name in our records.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for reaching us.