You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. Can you please give me your full name?

USER: I am Anna King.

ASSISTANT: Is there anything specific that you would like me to help you with?

USER: Actually I booked a ticket to New York last week, but for me its an emergency to go Orlando. Can you please change my existing reservation to Orlando?

ASSISTANT: Sure, Give me a minute.

USER: Ok, take your time.

ASSISTANT: Do you have any other requirements? Sorry to say that there is no reservation found.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for spending your time in talking to me.