You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Michelle Scott.

ASSISTANT: Yes, Scott.

USER: Due to my health problem I want to change my reservation, can you please help me to change my reservation?

ASSISTANT: Sure, I will help you out. Please wait a moment.

USER: Sure, take your own time.

ASSISTANT: Sorry Scott, no reservation found on your name.

USER: That's fine. Thank you for your help.

ASSISTANT: Thank you for reaching us.