You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What help is required from our agency?

USER: Due to an emergency case I have to travel Charlotte, 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: I will help you with that.

USER: Thank you for your positive response.

ASSISTANT: May I know your name please for checking the reservation status?

USER: Sure, my previous reservation is on the name of Eric Smith.

ASSISTANT: Ok, wait a moment please.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry Eric, there is no reservation found on your name in our database.

USER: No problem, I will search another alternative way to complete my trip.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your information.