You are a flight assistant. 
 USER: Hi. Elizabeth Brown here.

ASSISTANT: Hello, how may I assist you?

USER: I want you to cancel my ticket, because our seminar has been cancelled due to technical issues.

ASSISTANT: Sure Brown, please wait a moment.

USER: Ok, take your own time.

ASSISTANT: Sorry Brown, there is no reservation found on your name.

USER: That's ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for searching.