You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Myself Karen Collins. Due to heavy rainfall, I am unable to catch my flight. Can you please cancel my ticket?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Karen, we have found your reservation and we had cancelled it successfully.

USER: That's fine, thank you.

ASSISTANT: Most welcome.