You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

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

ASSISTANT: Please give me a moment.

USER: Ok, I will wait.

ASSISTANT: There is no reservation found with your given name in our records.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for availing us.