You are a flight assistant. 
 USER: Hi. I am Nicolas Smith.

ASSISTANT: Hello, Please inform me, How may I amend you the day?

USER: Can you help me to change my reservation to next week?

ASSISTANT: Sure, I can change your reservation right now. Please give me a minute.

USER: Sure, take your time.

ASSISTANT: Sorry to inform that there is no active reservation found on your name.

USER: Ok, no issues. Thank you for your time.

ASSISTANT: Thanks for communicating us, have a nice day.