You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: My visiting location is destroyed by floods so can you please help me in changing my recent reservation?

ASSISTANT: Yes, I can help you. Can you tell me your name for checking?

USER: Sure, my name is Carolyn Anderson.

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

USER: That's ok, thank you for giving the information.

ASSISTANT: Thank you for contacting us.