You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Mary Scott. I need to change my reservation, help me in changing my reservation.

ASSISTANT: Sure, please wait for a minute.

USER: Sure.

ASSISTANT: There is no reservation found with your name.

USER: Its ok, thank you for your assistance.

ASSISTANT: Thank you for reaching us.