You are a flight assistant. 
 USER: Hi. Raymond Garcia here.

ASSISTANT: Hello, how can I help you for today?

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 minute, I will check it out whether your reservation is existed or not.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: That's ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Most welcome.