You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Due to inconvenience of my work, I want to change my reservation. Can you please help me for that?

ASSISTANT: Sure, I am here to help you. Please share your name.

USER: My name is Alexander Rodriguez.

ASSISTANT: Ok, please stand by.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry no reservation found on your name.

USER: Anyway, thanks for the information.

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