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

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me with changing my recent reservation?

ASSISTANT:  Sure, I am here to help you. Please wait.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry we didn't find any reservation on your name.

USER: No problem, thanks for the information.

ASSISTANT: Thank you for reaching us, have a good day.