You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Patricia Hernandez.

ASSISTANT: How can I aid you today?

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

ASSISTANT: Sure, I am here to help you. Please hold on.

USER: Ok.

ASSISTANT: Thanks for your waiting, there is no active reservation found on your name to change.

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

ASSISTANT: Thank you for availing us, hope to serve you again.