You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: My cricket tournament has been postponed due to bad weather, can you please change my reservation?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: May I know your name?

USER: Dennis Jackson is my name.

ASSISTANT: Please hold for a moment, while I check for the reservation.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry to inform you there is no any reservation found on your name.

USER: Ok, may I have done with some other source. I will check. Anyway thanks for the information.

ASSISTANT: Thank you for visiting us, have a nice day.