You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you today?

USER: My name is Mary Adams and I would like to change my reservation.

ASSISTANT: Sure, can you please wait while I check further?

USER: Sure.

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

USER: No issue, thank you for the time.

ASSISTANT: Thank you for contacting us.