You are a flight assistant. 
 USER: Hi, I am Jason Robinson.

ASSISTANT: Hello, how can I assist you today?

USER: Owing an emergence, I want to change my existing reservation. Can you please help me with it?

ASSISTANT: Sure. Please wait a minute.

USER: Ok.

ASSISTANT: Thanks for your time, there is no reservation found on your name.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thanks for approaching us.