You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: As there is a sudden change in climate at my destination, I want to change my existing reservation. Can you please help me with this?

ASSISTANT: Sure, may I know your name?

USER: My name is Michelle Thompson.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: Not an issue, thank you for checking.

ASSISTANT: Thank you for reaching us.