You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you?

USER: Kenneth Young here, due to sudden work I need to change my reservation. Can you please help me with it?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Wait for a while.

USER: Ok.

ASSISTANT: We could not find any active reservation on your given name.

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

ASSISTANT: Thank you for opting us.