You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: Please help me to change an existing reservation due to bad weather conditions in my city.

ASSISTANT: Sure, We are here to help you.

USER: Thank you.

ASSISTANT: May I know your name?

USER: I am Jacob Jones.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: Sorry, we couldn't find a reservation on your name to change.

USER: Not a big issue, anyhow thank you very much for checking the reservation status.

ASSISTANT: Thank you for picking us.