You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Can you please change my reservation with name Samantha Roberts?

ASSISTANT: Sure. May I know your name?

USER: I have already mentioned my name.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name. Thank you for approaching us.

USER: Ok, no issues.