You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I want to change my recent reservation as my dance competition got postponed. Can you please change my reservation?

ASSISTANT: Sure, we are here to help you. Can I have your name to proceed?

USER: I am Alexander Clark.

ASSISTANT: Ok, please hold a moment.

USER: Ok.

ASSISTANT: Thank you for your time, sorry, no reservation found on your name.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.