You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I would like to change my reservation which is under my name. Can you please help me with that?

ASSISTANT: Sure, may I know your name?

USER: My name is Charles Evans.

ASSISTANT: Please give me a moment to check your ticket status.

USER: Sure.

ASSISTANT: I found your reservation, please provide your rescheduled itinerary dates.

USER: I would like to take off on Dec 23 and return on Dec 25.

ASSISTANT: May I know your genesis and terminus airport codes?

USER: My source airport code is IAD and the destination airport code is BOS.

ASSISTANT: Do you prefer a direct or connecting flight?

USER: I am looking for a connecting flight.

ASSISTANT: In which class do you prefer to travel?

USER: I don't have any other preference.

ASSISTANT: Please give me a moment to check for available flights.

USER: Sure, take your time.

ASSISTANT: AA airlines with flight 1015 is providing a connecting flight and ticket costs you 300 in economy class.

USER: Yes, please proceed with the booking.

ASSISTANT: Your ticket is confirmed Charles Evans.

USER: I appreciate your help, thank you.

ASSISTANT: Thank you for choosing us.