You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I have booked a ticket to Los Angeles to visit Griffith Park but due to heavy rain there, I need to change my reservation.Please help me with that.

ASSISTANT: Sure, can I have your name?

USER: Sure, my name is Amy Hernandez.

ASSISTANT: Sorry Amy, no reservation found on your name because of the climate change.

USER: Not an issue, I think it was not reserved properly. Any way, thank you for checking.

ASSISTANT: Do you need any other help?

USER: Not yet.

ASSISTANT: Ok, thank you for reaching us.