You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: Can you help me in changing my existing reservation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your name further process?

USER: My name is Kathleen White.

ASSISTANT: Ok, wait for some time I will check the reservations on your name and get back to you.

USER: Sure, take your own time.

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

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thanks for contacting us.