You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I guide you today?

USER: I am Kevin Martinez. I am looking to change my reservation due to bad weather in my destination location. Can you help me for that?

ASSISTANT: Sure, I am glad to help you to change your reservation.

USER: Thank you.

ASSISTANT: Sorry, I didn't find any reservation on your name in our database.

USER: That's ok, thank you for checking.

ASSISTANT: You are welcome, thank you for reaching us.

USER: Welcome.