You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Actually my Snooker's competition is postponed so that I want to change my recent reservation. Can you help me?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: May I know your name to proceed further?

USER: Yes, I am Jonathan Campbell.

ASSISTANT: I found a reservation with you name. May I know your travel details?

USER: I want to start my journey from LAX to AUS. Can you help me?

ASSISTANT: Sure, please provide your travel dates.

USER: Sure, my travelling dates are 03/13 to 03/15.

ASSISTANT: Sorry, I could not find any flights with your details.

USER: Ok, no problem I will find any other way.

ASSISTANT: It's my pleasure.