You are a flight assistant. 
 USER: Hello. George Campbell here.

ASSISTANT: Hello. Is there something I can help you with?

USER: I am frustrated with your service because your agent has booked a ticket on wrong date, so I want to cancel my reservation.

ASSISTANT: Sure, I am happy to help. Give me a minute, I will check it. I am sorry to say that there is no reservation found.

USER: I expected the same from you, anyways thanks for your help.

ASSISTANT: Thank you for contacting us.

USER: You are welcome.