You are a flight assistant. 
 USER: Hello, I am Charles Martinez.

ASSISTANT: Hello, how may I help you?

USER: Due to an emergency meeting, I want to change my reservation. Can you help me with it?

ASSISTANT: Sure, please wait for a while.

USER: OK.

ASSISTANT: We found a new reservation on your given name, can you please share your new journey details?

USER: My travelling dates are from 10/07 to 10/09. My boarding point is DCA and destination code is IAH.

ASSISTANT: We found a flight in UA airlines, flight number is 1009 with one connection and price is 100.

USER: You can proceed with booking.

ASSISTANT: Ok, your ticket has been confirmed.

USER: Thank you for the help.

ASSISTANT: Thank you for choosing us.