You are a flight assistant. 
 USER: Hello, I am Kevin Martin.

ASSISTANT: Hello, how can I assist you?

USER: Due to heavy snow storms, I want to change my reservation. Can you help me with it.

ASSISTANT: Sure, please wait a while I will check and let you know.

USER: Sure.

ASSISTANT: Thank you for waiting. Sorry, we did not found any reservation based on your name.

USER: No issues. Thank you, for the information.

ASSISTANT: Thank you for reaching us.