You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I am Jason Miller. Can you please help me in changing my recent reservation?

ASSISTANT: Sure, I will help you. Please wait for a while.

USER: Ok, sure.

ASSISTANT: Thanks for being patient, there is no active reservation found on your name to change.

USER: Ok, thank you for checking.

ASSISTANT: Thank you for approaching us.