You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you help me in booking a flight ticket from LAS to EWR?

ASSISTANT: Sure. Do you require a connecting or direct flight?

USER: I need a direct flight.

ASSISTANT: Please send me your travel dates.

USER: I will start my journey on Oct 4 and I will return on Oct 6.

ASSISTANT: Ok, let me know your name please.

USER: Myself Michelle Mitchell.

ASSISTANT: Thanks for sharing the details, please wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for being patience, but no flight is available that runs on respective dates.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Ok, Thank you.