You are a flight assistant. 
 USER: Hello, I am Paul Adams.

ASSISTANT: Hello, how can I serve you?

USER: Due to heavy snow storms, I want to change my reservation. Can you help with it.

ASSISTANT: Sore, please wait a while I will check and let you know.

USER: OK.

ASSISTANT: Thank you for waiting. Your reservation is found. Can you please help me with your new journey dates? May I know your airport codes?

USER: Sure, my depart is 11/01 and return on 11/03. I want to start is from IAD and return from PHL.

ASSISTANT: Thank you for your details. A flight with price 200 having single connection is found UA airline. Shall I proceed with it?

USER: OK, proceed with booking.

ASSISTANT: Your ticket is confirmed in flight number 1009.

USER: Thank you, for the help.

ASSISTANT: Thank you for choosing us.