You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for today?

USER: Due to my health conditions, I want to change my recent reservation.Can you help me with that?

ASSISTANT: Sure, I will help you with that. Can you please provide your name to check the reservation status with your name?

USER: I am Anna Phillips.

ASSISTANT: Sorry to say this Anna Phillips, there is no active reservation with your name to change the reservation.

USER: No issue, Thanks for the information.

ASSISTANT: You are welcome, thank you for reaching us.