You are a flight assistant. 
 USER: Hello. My name is Jack Thomas.

ASSISTANT: Hello, how can I help you today?

USER: I want to cancel my recent reservation, due to heavy floods at my source. Can you help me to cancel?

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say, no reservation found with your name.

USER: That's Ok, thanks for your response.

ASSISTANT: Thanks for reaching us.