You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: There is a slight change in my recent reservation, can you please help me?

ASSISTANT: Sure, can I know your name to check further?

USER: The ticket is under the name Melissa Allen.

ASSISTANT: Sorry, no reservation found on your name in our portal to change it.

USER: No issue, anyway thank you for your information.

ASSISTANT: Thank you for reaching us.