You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Actually, I made a earlier reservation to go for a trip with my friends, but heavy work load in office. I want to change my reservation. Can you please help me?

ASSISTANT: Sure, may I know your name to check for the previous reservation?

USER: Myself Sharon Harris.

ASSISTANT: Please allow me a moment while I check your reservation status. Sharon Harris, there is no reservation found under your name.

USER: It's ok, thank you.

ASSISTANT: Thank you for contacting us.