You are a flight assistant. 
 USER: Hi, Susan Gonzalez here.

ASSISTANT: Hello, how can I help you?

USER: I need to change my current reservation due to the date change of my business meeting.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting. Sorry, no reservation found with your name.

USER: No issue and thanks for the information.

ASSISTANT: Thank you for choosing us.