You are a flight assistant. 
 USER: Hi. George Brown here.

ASSISTANT: Hello. How may I guide you today?

USER: Can you change my flight ticket reservation?

ASSISTANT: Sure, I am glad to help you with that.

USER: Ok.

ASSISTANT: Can I know your name to check your previous reservation?

USER: I am George Brown.

ASSISTANT: Please be on hold to check.

USER: Sure.

ASSISTANT: I have found your reservation. Can you please provide your preferable dates of travelling?

USER: The travel dates are from 16 May to 18 May.

ASSISTANT: Ok, may I know your origin and destination airport codes?

USER: The airport codes are from EWR to MSP.

ASSISTANT: Do you have any connection limit?

USER: I prefer a stopover flight.

ASSISTANT: Any more preferences do you have?

USER: No.

ASSISTANT: Please wait a moment to check the flights.

USER: Sure.

ASSISTANT: Based on your information, I have found a flight with 1 connection having with the fare of 100 provided by JetBlue airlines in economy class. Are you ok with this flight?

USER: I am fine with the airlines. You can book it.

ASSISTANT: Ok, your reservation has been successfully changed.

USER: Thank you.

ASSISTANT: Thank you for approaching us, hope you have a great day.