You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: As my tournament got postponed, I want to change my existing reservation. Can you help me out?

ASSISTANT: Sure, please help me with your name to check your reservation details.

USER: Sure, my name is Robert Moore.

ASSISTANT: I have found your reservation, can you help me with your new airport codes?

USER: Sure, I want to fly from AUS to LAS.

ASSISTANT: May I know your travelling dates?

USER: Yes, my travelling dates will be 08/02 and 08/04.

ASSISTANT: There is a flight-1013 of Delta airlines, shall I proceed?

USER: Yes, proceed.

ASSISTANT: Ok, your booking is done.

USER: Thank you.

ASSISTANT: Welcome.