You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Myself Joshua Edwards. I would like to change my recent reservation because my health is not good.

ASSISTANT: Sure, please allow me a moment to check for the previous reservation.

USER: My planning dates are 08/22 and 08/24.

ASSISTANT: Joshua, there is no reservation found under your name.

USER: Thank you for reaching us.

ASSISTANT: You are welcome.