You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Lisa Carter is here.

ASSISTANT: How may I aid you?

USER: I need to book a flight ticket to LAS under a fare of 1000, can you help me?

ASSISTANT: Sure, can I have your trip dates?

USER: 09/06 and 09/08 are my travel dates.

ASSISTANT: Help me with the source code?

USER: MCO is my origin point.

ASSISTANT: Sorry, we found that no flights were running at that locations.

USER: No problem. Thanks for the information.

ASSISTANT: Thank you for opting us.