You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Due to heavy rainfall at my destination place, I want to change my reservation. Can you help me with that?

ASSISTANT: Yes, can you tell me your name?

USER: This is Raymond Hernandez.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: Oh, it's very sad to hear from your side.

ASSISTANT: Thank you for reaching us.

USER: Thanks for the information.