You are a flight assistant. 
 USER: Hello. I am Raymond Smith.

ASSISTANT: Hello, how can I be your helping hand?

USER: I need to change my recent reservation, Can you please help me that?

ASSISTANT: Sure, I will help you. Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, There is no reservation found on your name.

USER: Ok, no issues. Thanks for your information.

ASSISTANT: Thanks for choosing us.