You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I am Kathleen Phillips. I have already reserved a direct flight to Houston, but I need a connecting flight in between my journey so that I can meet my friend after a long time.

ASSISTANT: Ok.

USER: Can you please change my existing reservation?

ASSISTANT: Sure, I am ecstatic to help you.

USER: Thank you.

ASSISTANT: Please wait for a while, I will check your reservation.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation exists with your name.

USER: Ok, it's not an issue. Thanks for your kind information.

ASSISTANT: Thank you for approaching us.