You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Michelle Smith. Can you help me for changing my existing reservation?

ASSISTANT: Yes, I can help you. I had found reservation on your name. Can you share me your travelling dates?

USER: My new travel dates are DEN to SEA.

ASSISTANT: Ok, can you tell me your dates of journey?

USER: My journey dates are 03/28 and 03/30.

ASSISTANT: Give me a moment.

USER: OK.

ASSISTANT: I have found a flight ticket with a price of 100 and 1 connection.

USER: Ok, proceed to booing that fight.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.