You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What assistance do you need from our agency?

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

ASSISTANT: Sure, I will definitely help you with that. Can I know your good name please?

USER: Sure, my name is David Perez.

ASSISTANT: Ok, please give me a minute to check your ticket status.

USER: Sure.

ASSISTANT: Sorry to intimate you that, I have not found any reservation with your name in our portal to change the ticket details.

USER: Not an issue. Anyway, thank you for checking.

ASSISTANT: You are most welcome.  Thank you for opting us.