You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER:  I have some personal matters that need fixing so I need to change an existing reservation. Can you please help me out?

ASSISTANT: Sure, please wait for a moment. May I know your name?

USER: Please check the details on the name Alexander Harris.

ASSISTANT: Sorry, no reservation found with your name.

USER: Ok, no worries. Thank you.

ASSISTANT: Thank you for opting us.