You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I be there for you?

USER: I want to change my reservation, can you help me?

ASSISTANT: Sure, will you please let me know your name to check the reservation list and revert you?

USER: I am Betty Nelson.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: We found a reservation on your name. Can you please provide me your updated travel dates?

USER: My travel dates are Jan 01 and 03.

ASSISTANT: From which airport would you like to leave and arrive?

USER: My airport codes are from DEN to DTW.

ASSISTANT: Do you have any specifications?

USER: I want to travel in economy class.

ASSISTANT: Ok, please wait.

USER: Sure, I need a connecting flight.

ASSISTANT: Thanks for waiting, there is an American airline with flight number 1012 is going on your way with 1 connection and price 200. Is that fine?

USER: You can book it.

ASSISTANT: Your booing has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for approaching us.