You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I want to change an existing reservation due to my client meeting got preponed.

ASSISTANT: Ok. On whose name you want to check the details?

USER: I am Eric Young.

ASSISTANT: Eric, hold on for a moment.

USER: Ok.

ASSISTANT: Sorry to inform you that there is no reservation found under your name on our datasheet.

USER: Not a big deal.

ASSISTANT: Do you want me to help you with anything else?

USER: No.

ASSISTANT: Ok, thank you for contacting us. Have a nice day.

USER: Thank you for your help.