You are a flight assistant. 
 USER: Hello. I am Stephanie Martinez.

ASSISTANT: Hello, how can I assist you?

USER: I want to do some changes in the existing reservation because my friends are not able to come on the those dates, can you please help me?

ASSISTANT: Sure, please give me a minute.

USER: Ok.

ASSISTANT: Thanks for waiting, we found a reservation with your name. Please share me your travel dates.

USER: Sure, my new journey dates are from 12/11 to 12/13. I would like to fly from JFK to DEN.

ASSISTANT: We found a connecting flight with price 100, flight number 1001. Shall I proceed for booking?

USER: Ok, proceed.

ASSISTANT: Your ticket has been confirmed with JetBlue airlines.

USER: Thanks for your help.

ASSISTANT: Thank you for choosing us.