You are a flight assistant. 
 USER: Hi, I am Christine Turner.

ASSISTANT: Hello, how can I best help you today?

USER: Can you please help me with changing the reservation?

ASSISTANT: Sure, I am here o help you.

USER: Thank you.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for your time. Sorry to say that, there is no active reservation found on your name.

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

ASSISTANT: Thanks for contacting us, have a good day.