You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Sarah Taylor here.

ASSISTANT: Yes Taylor, what can I do for you?

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: Ok. Please wait a moment, let me check.

USER: Sure, take your own time.

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

USER: It's ok, no issues.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.