You are a flight assistant. 
 USER: Hello, I am Carolyn Williams.

ASSISTANT: Hello, how may I aid you now?

USER: I need to change my recent reservation due to health problem. Could you please help me in doing that?

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for holding, there was no reservation found under the given name.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for connecting us.