You are a flight assistant. 
 USER: Hello, I am Rebecca Williams.

ASSISTANT: Hello, how may I best serve you today?

USER: Will you please help me in booking a flight ticket to Las Vegas, LAS as I am planning to attend for music festival?

ASSISTANT: Sure, may I know your origin airport code?

USER: I am planning to start my journey from Orlando, MCO.

ASSISTANT: Can you please share me your planned travel dates?

USER: My preferable dates of journey are 07/28 to 07/30.

ASSISTANT: At what price range are you looking for?

USER: I can afford up to 5000.

ASSISTANT: Unfortunately there is no flight on your details.

USER: It's ok, no problem. Thank you for your information.

ASSISTANT: Thank you so much for choosing us.