You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what kind of help are you expecting from our side?

USER: I am Gary Hernandez. I am planning to change my reservation to another destination, so can you help me to change my reservation?

ASSISTANT: Sure, we are mirthful to help you. Please wait for a few minutes.

USER: Ok.

ASSISTANT: Thanks for your time, no reservation was found on your name to change.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us.