You are a flight assistant. 
 USER: Hello, Eric Robinson here.

ASSISTANT: Hello, how may I assist you?

USER: I have to shift my house, so I want to change my reservation. Could you help me?

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: Eric, no reservation has been found on your name in our database.

USER: No problem, thank you for helping me.

ASSISTANT: Thank you for choosing us. Have a nice day.