You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you for today?

USER: I want to change my reservation which is done recently due to some problems, can you please help me?

ASSISTANT: I am here to help you about that. Can you please provide your name to check the reservation with your name?

USER: Sure, my name is Daniel Jones.

ASSISTANT: Good to say this Daniel Jones, I have found your reservation in our booking list. Can you please provide your modified dates of journey?

USER: Ok, my dates of journey are from Aug, 31 to Sep, 02.

ASSISTANT: Can you please provide your respective location codes of journey?

USER: Sure, my airport codes are from EWR to JFK.

ASSISTANT: Would you like to have any connecting flight for your journey?

USER: No.

ASSISTANT: Do you have any other specifications for your journey?

USER: No.

ASSISTANT: There is a flight by Delta airlines having a ticket fare of 200 which departures in the morning. Would you like me to book this flight for your journey?

USER: Ok, you can change it.

ASSISTANT: I have booked your flight ticket with the flight 1005 in an economy class.

USER: Thank you for your help in booking my ticket.

ASSISTANT: You are welcome, thank you for employing our service. Have a safe journey.