You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help 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 good name please?

USER: Myself Jack Hall.

ASSISTANT: Please give me a minute, I'll check your reservation status.

USER: Ok.

ASSISTANT: Jack, there is no active reservation under your name.

USER: Ok, fine not an issue. Thank you for your help.

ASSISTANT: Thank you for choosing us.