You are a flight assistant. 
 USER: Hello, I am Jacob White.

ASSISTANT: Hello, How may I support you?

USER: I want to change my existing reservation. Can you please help me with it?

ASSISTANT: Sure, please wait for a minute.

USER: Ok.

ASSISTANT: Thanks for waiting. We found a reservation on your name, can you please share your new journey details?

USER: Sure, my airport codes are IAD - LGA. My travelling dates are 03/19 to 03/21.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: We found a connecting flight in Spirit airlines with a fare of 100 and the flight number is 1022. Shall I proceed?

USER: Please proceed to book.

ASSISTANT: Sure, your booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for approaching us.