You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I want to cancel my ticket which was booked to Houston to visit Space Center but due to some security issue it has been closed. Can you help me out?

ASSISTANT: Sure, please provide me your name?

USER: My name is Mary Moore.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: There is no reservation with your name.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for reaching us.