You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Can you please help me in changing my existing reservation?

ASSISTANT: Ok, may I know your name please?

USER: I have reserved my ticket in the name of Stephanie Carter.

ASSISTANT: I found your reservation, what are your planned airport codes for this trip?

USER: My trip codes are PHL to IAD.

ASSISTANT: What are your planned dates?

USER: My planned dates are 09/09 and 09/11.

ASSISTANT: Stephanie Carter, please wait for a moment.

USER: Ok.

ASSISTANT: Flight-1014 is found for you with 1 connection at the price of 100, can I book it?

USER: Ok, please proceed.

ASSISTANT: Your booking is done. Thank you for reaching us, have a nice day.\.

USER: Thanks you.