You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How may I serve you?

USER: As my sports meeting has been postponed. Can you please change my reservation?

ASSISTANT: Can I know your name?

USER: Alexander Davis is my name.

ASSISTANT: Please wait for a while.

USER: Ok.

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

USER: Ok, no issues.

ASSISTANT: Thank you for communicating with us.

USER: Thanks for your service.