You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: Can you please change my reservation, due to bad weather conditions?

ASSISTANT: Sure, let me know your name to check further?

USER: My name is Matthew Brown.

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

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for contacting us.