You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: How can I change the reservation which I had done recently?

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

USER: My name is Debra Taylor.

ASSISTANT: Please wait for a while let me check your status and get back to you.

USER: Sure, I will wait.

ASSISTANT: I found your reservation successfully please share your travel specifications?

USER: That is good to know, please change the source airport code to OAK and destination airport code to LGA.

ASSISTANT: May I know your travel dates?

USER: Ok, please amend the dates as per the dates I have planned which are Jan 4th and Jan 6th.

ASSISTANT: Do you have any connection limit preferences to travel?

USER: Check for a connecting flight.

ASSISTANT: United Airlines is providing the connecting flight on this route and the fare of 100, shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your reservation has been amend successfully for the flight 1004 and the class is economy.

USER: Ok, thank you for the kind service.

ASSISTANT: Thank you for choosing our agency.