You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Kimberly Rodriguez here. I need to change my existing reservation due to some issues, can you help me?

ASSISTANT: Sure, please allow me a moment to check for the status.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting. Here, there is no active reservation have been found under your name in our database to amend it.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for reaching us.