You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you please change my reservation, due to bad weather conditions?

ASSISTANT: Sure, please provide me the name.

USER: My name is William Perez.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: Thank you for waiting. Here, there is no active reservation have been found.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for reaching us.