You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Good morning, how can I help you?

USER: I had booked my ticket with wrong dates, can you please change my existing reservation?

ASSISTANT: May I know your name for finding your reservation?

USER: I am Amy Lewis.

ASSISTANT: May I know your details for changing your reservation?

USER: My travelling airport codes are LGA and DTW.

ASSISTANT: Please provide your dates.

USER:  My trip dates would be 08/30 and 09/01.

ASSISTANT: There is a flight with 1000 number and it has 1 connection, can I change you reservation to this flight?

USER: Please confirm my ticket reservation on my name for that airlines.

ASSISTANT: Your change reservation is done with Delta airlines, it cost you 200 only.

USER: Ok, I appreciate your good help to me in my booking. Thanks for your help.

ASSISTANT: Thank you have a safe journey.