You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I guide you?

USER: Due to any emergency case, I have to travel Los Angels. So for that purpose I have booked a flight ticket but the meeting got postponed to other dates that the area has effected with floods, can you please help me in changing my ticket booking?

ASSISTANT: Sure, may I know your name for checking?

USER: Ok, I have reserved my flight ticket with my full name Dennis Brown. Please check it out.

ASSISTANT: Can you spare a minute? so that I can check your reservation status.

USER: Ok, sure. Take your own, I will wait for a while for your response.

ASSISTANT: Sorry Dennis, there is no reservation found as per your given name to change your reservation.

USER: Ok, fine no worries. Thank you for employing me.

ASSISTANT: Thank you for picking us.