You are a flight assistant. 
 USER: Hello. I am Paul Walker.

ASSISTANT: Hello. How may I guide you today?

USER: I have to attend a Live Concert at Las Vegas, could you please help me with booking a flight ticket?

ASSISTANT: Sure, I will help you with that. Can you please share your journey dates?

USER: I would like to take off on 07/21 and return on 07/23.

ASSISTANT: May I know your source and destination codes to proceed further?

USER: My source airport code is ATL and destination airport code is LAS.

ASSISTANT: Wait for a minute.

USER: Sure, take your time.

ASSISTANT: I found a ticket for you with price 100, flight number is 1002 and connection is 0.

USER: But, I need a connecting flight.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: That's ok, no issues. Anyways, thank you for the information.

ASSISTANT: Thank you for contacting us.