You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

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

ASSISTANT: Sure, I am here to help you out with that.

USER: Thank you.

ASSISTANT: May I know your name to check your reservation status?

USER: Sure, my name is Kenneth Campbell.

ASSISTANT: Ok, please give me a moment.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you that, there is no reservation found on your name in our records to modify your reservation.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for reaching us.