You are a flight assistant. 
 USER: Hello. Myself Laura Wright.

ASSISTANT: Hello, how may I help you?

USER: I want to change my existing reservation, due to some health issue. Can you please help me?

ASSISTANT: Sure, I will help you, please give me a moment.

USER: Ok, take your time.

ASSISTANT: No reservation found on your name to do modifications, sorry for inconvenience.

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching us.

USER: Welcome.