You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I need your assistance to change my reservation that I have reserved earlier, will you please help me?

ASSISTANT: Sure,  may I know your name?

USER: Sure, my name is Emily Lewis.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: We found a reservation on your name, can you please share your dates of travel?

USER: Sure, my travelling dates are on Dec 25th to 27th.

ASSISTANT: May I know your airport codes?

USER: My airport codes are LAX - MSP.

ASSISTANT: Do you have any connection limit?

USER: Yes, I prefer it.

ASSISTANT: Is there any airline preference?

USER: I am comfortable with any airline.

ASSISTANT: We found an airline Hawaiian with flight 1000 having a fare 100 with stopover. Shall I proceed to book?

USER: Ok, you can change my reservation.

ASSISTANT: Your reservation has been changed successfully.

USER: Thank you.

ASSISTANT: Thank you for reaching us.