You are a flight assistant. 
 USER: Hi. Rachel Carter here.

ASSISTANT: Hello, what can I aid you for today?

USER: My airport codes for boarding the flight are LAS to JFK.

ASSISTANT: Sure, I will help you with your flight ticket booking. Can you please let me know your planned dates of your journey?

USER: My preferable dates for travel are 06/01 to 06/03.

ASSISTANT: Please wait for sometime, I will revert back to you with the available flight.

USER: Ok.

ASSISTANT: Sorry to say this Carter, there are no flights on your planned dates of your journey.

USER: Ok, not a problem. Thank you.

ASSISTANT: You are welcome, thank you for reaching out here.