You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you right now?

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

ASSISTANT: Sure, I am glad to help you with that. Please provide your name to check your previous reservation.

USER: My name is Michael Martinez.

ASSISTANT: Wait a moment to check.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry as per your concern I can not amend your reservation as your reservation is not found as per our records.

USER: No issues, thank you for your information.

ASSISTANT: Thank you for reaching to our services, hope you have a great day.