You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am unable to catch the flight on the departure date because there is an important meeting on the same day. Can you please help me in changing the ticket details?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Can you please tell me your name?

USER: My name is Alexander Smith.

ASSISTANT: Smith, please tell me your airport codes.

USER: The airport codes are SEA and HOU.

ASSISTANT: Ok, please tell me your trip dates.

USER: My travelling dates are 11/23 and 11/25.

ASSISTANT: Ok, please allow me a moment.

USER: Ok.

ASSISTANT: The UA airline with flight number 1003 is available having price as 100 and connection as 1. Shall I proceed?

USER: Ok, please proceed with booking.

ASSISTANT: Ok, your reservation is done.

USER: Thank you for your service.

ASSISTANT: Thank you for consulting us, have a great day.

USER: Welcome.