You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Barbara King here.

ASSISTANT: How can I help you today?

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

ASSISTANT: Sure, I can help you with that.

USER: Thanks.

ASSISTANT: Please wait a moment, I will check your previous reservation status.

USER: Ok.

ASSISTANT: I have found your reservation and cancelled successfully.

USER: Thank you.

ASSISTANT: Thank you for reaching us, have a good day.