You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name?

USER: I'm Stephen Anderson.

ASSISTANT: How may I help you?

USER: My trip has been postponed, can you help me in change in my reservation.

ASSISTANT: Can you please provide me your airport codes?

USER: My airport codes are LAS and AUS.

ASSISTANT: May I know your travelling dates?

USER: My travel dates are from 02/21 to 02/23.

ASSISTANT: Ok, wait a moment.

USER: Ok.

ASSISTANT: As per your request flight has found for you with 0 connections and price limit is 100. Shall I proceed to book?

USER: Sorry, I need a flight with 1 connection.

ASSISTANT: No flight available with connection 1.

USER: It's fine. Thank you for your response.

ASSISTANT: Thank you for reaching us.