You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jonathan Hill.

ASSISTANT: How can I assist you today?

USER: I would like to cancel my reservation due to in my destination many people are moving to another location due to active volcano. So, can you please help me with that?

ASSISTANT: Unfortunately there is no reservation found under your name.

USER: Oh! May be I am wrong. Thank you for your information.

ASSISTANT: Welcome, have a great day.