You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Katherine Walker. I need to change my existing reservation, Can you please help me with that?

ASSISTANT: Sure, we are happy to help you.

USER: Thank you.

ASSISTANT: Please wait for a few minutes.

USER: Sure, make it fast.

ASSISTANT: Thank you for waiting, we found a reservation on your name. Please provide your new journey dates.

USER: I would like to travel on 03/23 to 03/25. My source point is IAH to EWR.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a connecting flight in 1022 Spirit plane with price 100. Shall I proceed for booking?

USER: Ok, proceed for booking.

ASSISTANT: Sure, your ticket has been booked.

USER: Thanks for your information.

ASSISTANT: Thank you for reaching us.