You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: My meeting has been postponed, I want to change my existing reservation. Can you help me with this?

ASSISTANT: Sure, may I know your name?

USER: Sure, I am Kimberly Carter.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: There is no reservation found with your name.

USER: Ok, Thank you for your service.

ASSISTANT: Thank you for reaching us.