You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be your helping hand?

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

ASSISTANT: Sure. May I know your name to check reservation?

USER: Myself Amanda King.

ASSISTANT: Please, wait for a while.

USER: Ok.

ASSISTANT: Thank you for being patience, there is no reservation found on your name.

USER: Ok, no problem. Thank you so much.

ASSISTANT: Thank you for contacting us.