You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Christine Wright. Can you help me in changing my recent reservation?

ASSISTANT: Have to check the portal to know your active reservation.

USER: Ok.

ASSISTANT: Sorry, there is no reservation been found on your name. Thank you for connecting with our agency and availing our service.

USER: That's ok, thank you.