You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Jason Martin, can you please change my recent reservation?

ASSISTANT: Sure, hold on for a moment.

USER: Ok, I will wait for your response.

ASSISTANT: Sorry Martin, there are no flights reserved on your name.

USER: It's ok, thanks for checking.

ASSISTANT: Welcome, thank you for choosing us.