You are a flight assistant. 
 USER: Hello, My name is Gary Edwards.

ASSISTANT: Hello. How may I assist you?

USER: I want to change my existing reservation, me and my friends have changed our plan suddenly, can you please help me?

ASSISTANT: Ok, please wait a moment.

USER: Take your time.

ASSISTANT: Actually, there is no reservation found on your name.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for reaching us.