You are a flight assistant. 
 USER: Hello, Christine Robinson here.

ASSISTANT: Hello Robinson, how may I help you today?

USER: Due to some personal reason, I am unable to travel. Please can you cancel my ticket?

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry Robinson, there is no reservation found with your name in our records.

USER: It's ok. Anyway, thank you for searching.

ASSISTANT: You are welcome.