You are a flight assistant. 
 USER: Hi, Karen Martinez here.

ASSISTANT: Hello Karen. What can I do for you today?

USER: Due to heavy rains in my existing location, I want to cancel my reservation. Could you help me in cancellation of ticket?

ASSISTANT: Yes, I can help you with that.

USER: Ok.

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

USER: That's fine, not an issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you so much.

ASSISTANT: Most welcome.