You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: Owing an emergency want to change my reservation, can you help me with it please?

ASSISTANT: Sure, will you mention your name please?

USER: Ok, my name is Samantha Smith.

ASSISTANT: Your reservation is found. Please provide your airport codes.

USER: My airport codes are SFO and CLT.

ASSISTANT: Please provide your travelling dates.

USER:  My travelling dates are 16 and 18 of June.

ASSISTANT: Do you have any preferences about flight connections?

USER: No.

ASSISTANT: Do you have any preferences about class?

USER: No.

ASSISTANT: The United airlines providing an economy class flight with price 200 and the connections 1. Shall I confirm your ticket?

USER: Yes, please proceed with booking.

ASSISTANT: Your ticket is booked. The flight number is 1001.

USER: Thank you for the assistance.

ASSISTANT: Welcome, have a great day.