You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: My name is Sandra Turner and I want to change my reservation. Can you please help me?

ASSISTANT: Sure, I am here to help you out.

USER: Thank you.

ASSISTANT: Please give me a moment to check your reservation status.

USER: Take your time.

ASSISTANT: Sorry, there is no reservation found on your name in our records.

USER: Thank you for the information.

ASSISTANT: Thank you for reaching us.