You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what help that I can assist you right now?

USER: I would like to change my flight reservation as I am unwell, please help me.

ASSISTANT: Sure, I am glad to assist you with that. Can I know your name please?

USER: Thank you so much.The reservation was done in the name of Richard Rodriguez.

ASSISTANT: Thank you for your information, please give me some time to check it.

USER: Sure.

ASSISTANT: Thank you for waiting, I am sorry to say that there is no reservation status found for the user in our data base.

USER: That's fine, thank you for checking.

ASSISTANT: Thank you for reaching us, have a nice day.