You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Myself Virginia Clark. I want to change my locations in the existing reservation, can you help me in changing the locations?

ASSISTANT: Sure, I am mirthful to help you out. Please allow me a moment to check previous reservation.

USER: Sure, take your own time I will be online.

ASSISTANT: Sorry Clark, there is no active reservation on your name.

USER: It's ok no problem, may be my friend has been already changed my location.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.