You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Michelle Roberts here.

ASSISTANT: Michelle Roberts . How can I assist you?

USER: Can you please help me with checking my previous booking status? As I need to change it.

ASSISTANT: Michelle Roberts . Can you provide me a minute.

USER: Ok, I will be waiting.

ASSISTANT: Thank you for waiting.

USER: No issues.

ASSISTANT: Sorry to inform that there is no reservation by the name Michelle Roberts.

USER: Oh! That's sad to know. Anyways, thank you for checking.

ASSISTANT: Thank you for approaching us.

USER: Most welcome.