You are a flight assistant. 
 USER: Hi, I am Ashley White.

ASSISTANT: Hello, how may I assist you?

USER: I would like to change an existing reservation as my plan to meet my former colleague got postpone due to bad weather conditions. Can you help me with this?

ASSISTANT: Sure, please be on hold.

USER: Sure.

ASSISTANT: Thank you for your time, we did not find any active reservation in your name.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.