You are a flight assistant. 
 USER: Hi. Ronald Young is my name.

ASSISTANT: Hello, how may I render you today?

USER: Please help me out in changing my recent reservation due to some personal work.

ASSISTANT: Sure, we are here to help you. Please wait for a minute, I will check and let you know the reservation status.

USER: Good to hear that from you. Ok.

ASSISTANT: Sorry, there is no active reservation found on your name in the database.

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

ASSISTANT: Thank you for reaching us.