You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how could I aid you today?

USER: My name is Anna Thompson.

ASSISTANT: Ok.

USER: I already have an reservation to attend for an meeting, due to some technical issues my meeting has been postponed. Can you assist me to change my recent reservation?

ASSISTANT: Sure, please give me a moment.

USER: Sure.

ASSISTANT: There is no reservation found with your given name.

USER: THat's Ok, thanks for your information.

ASSISTANT: Thank you for choosing us.