You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Anna Campbell.

ASSISTANT: How may I support you today?

USER: My sports event date was changed, can you help me in changing my reservation?

ASSISTANT: Sure, I'll help you with this.

USER: Ok.

ASSISTANT: Please wait a moment to check the reservation status.

USER: Sure.

ASSISTANT: Thank you for waiting, unfortunately there is no reservation found by this name.

USER: That's ok. thank you.

ASSISTANT: Thank you for availing us.