You are a flight assistant. 
 USER: Hello. Steven Anderson here.

ASSISTANT: Hello, how may I support you?

USER: I would like to change my reservation, can you please help me out with that?

ASSISTANT: Sure, I am here to help you for this. Let me check your reservation status in our records.

USER: Sure, I will wait for your response.

ASSISTANT: We could not find any reservation by the name you provided.

USER: Ok, no problem. Thank you for checking out.

ASSISTANT: Thank you for approaching us.