You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

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

ASSISTANT: Ok, may I know your name?

USER: My name is Ronald Gonzalez.

ASSISTANT: Please wait. Sorry, no reservation found on your name to change.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for reaching us.