You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: Due to bad weather conditions, can you help me to change my existing reservation?

ASSISTANT: May I know your name?

USER: Sure, my name is Margaret Evans.

ASSISTANT: Can you please provide me your new airport codes?

USER: Sure, my new airport codes are OAK and ORD.

ASSISTANT: Please send me your travelling dates?

USER: Yes, my travelling dates will be 10/22 and 10/24.

ASSISTANT: I have searched a flight ticket with fare 100 and 1012 as flight number. Shall I proceed?

USER: Yes, proceed with my booking.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you.

ASSISTANT: Most welcome.