You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I want to do some changes in my existing reservation. Can you help me for that?

ASSISTANT: Sure, may I know your name please?

USER: My name is Nancy Turner.

ASSISTANT: We found a reservation with your given name, please share your new journey dates.

USER: My new travelling dates are dates are June 11 and June 13.

ASSISTANT: May I know your source and destination airport codes?

USER: My travelling airport codes are from MSP to IAD.

ASSISTANT: Can you please share your connection limit?

USER: I need a single connecting flight.

ASSISTANT: Do you have any class preference?

USER: I prefer to book a economy class.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: We found a JetBlue airline, flight number: 1014, price: 100 with one connection.

USER: Ok, proceed for booking..

ASSISTANT: Your flight ticket has been confirmed in economy class.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.