You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I want to change my existing reservation due to heavy rainfall, can you please help me with that?

ASSISTANT: Sure, I'm glad to help you in amending. Please provide me the name to check for the status.

USER: My name is Raymond Jackson.

ASSISTANT: Please be on hold, I will get back to you in a minute.

USER: Sure.

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

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.