You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to change my reservation due to some health issues, so please help me in changing.

ASSISTANT: Sure, I will help you.

USER: Thank you for accepting my request.

ASSISTANT: Can I have your name to check for previous reservation?

USER: Sure, you can check the reservation on the name of Deborah Scott.

ASSISTANT: Please, wait for a moment.

USER: Ok, I will wait.

ASSISTANT: Thank you for waiting, there is no reservation found on your name to proceed for modification.

USER: That's Ok, thank you for informing me.

ASSISTANT: Thank you for reaching us.