You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Anna Campbell here.

ASSISTANT: How may I help you today?

USER: Suddenly my trip got cancelled due to heavy floods happening in my travel location. So can you please help me out with cancelling of my ticket?

ASSISTANT: Sure, could you provide me your name, so that I will check the your reservation.

USER: Please check the reservation under the name of Anna Campbell.

ASSISTANT: Ok Anna, wait for a minute.

USER: Sure, take your time.

ASSISTANT: Sorry Anna, no reservation found on your name, I think your previous reservation is not confirmed before.

USER: Oh, it may be the reason.

ASSISTANT: Do you need any other help?

USER: Anyways, thank you for the information. Nothing, thank you.

ASSISTANT: Ok, thank you for contacting  us.

USER: Welcome.