You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Richard Lee.

ASSISTANT: How may I help you today?

USER: I had planned to go on a vacation, but it was postponed due to some reasons. Can you change my recent reservation?

ASSISTANT: Sure, I will help you with that. Please give me a minute.

USER: Sure, take your own time.

ASSISTANT: May I know your airport codes?

USER: I want to travel from HOU to SEA.

ASSISTANT: Can you please share your travelling dates?

USER: I would like to travel on 05/10 and 5/12.

ASSISTANT: Wait for a minute.

USER: Sure, take your time.

ASSISTANT: I found a ticket for you with price 200, flight number is 1015 and connection is 1. Is it ok for you?

USER: Ok, proceed to booking.

ASSISTANT: I confirmed your ticket successfully.

USER: Thank you for helping me out.

ASSISTANT: Thank you.