You are a flight assistant. 
 USER: Hello. I am Amy Taylor.

ASSISTANT: Hello, how may I be there for you?

USER: I want to change my existing reservation due to some health issues, can you help me with that?

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

USER: Thank you.

ASSISTANT: We could not find any reservation in our data base by the name you provided.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for approaching us.