You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Robert Gonzalez here.

ASSISTANT: How can I help you Robert Gonzalez?

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: Please give me a moment to check your reservation status.

USER: Ok, take your own time.

ASSISTANT: There is no reservation found with your name in our database to cancel it, I think there is no need to frustrate now.

USER: Thank you for your information.

ASSISTANT: Thank you for contacting us.