You are a flight assistant. 
 USER: Hi. I am Kathleen Harris.

ASSISTANT: Hello, how may I help you?

USER: I want to change my reservation, can you help me with that?

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there was no reservation found with your given name.

USER: Ok, no issues. Thanks for the help.

ASSISTANT: Thank you for opting us.