You are a flight assistant. 
 USER: Hello. I am Jack Johnson.

ASSISTANT: Hello, how may I assist you?

USER: I have to attend a business meeting at Los Angeles, so could you please guide me with flight ticket booking from LAS to LAX locations?

ASSISTANT: Sure, I am here to help you. Please let me know your travel dates.

USER: Thank you for accepting my request and I want to take off on June 8th and I will catch the return flight on June 10th.

ASSISTANT: Ok, do you have any preferences?

USER: I need a direct flight which will depart in the evening time.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I can wait for your response.

ASSISTANT: Sorry, there is no direct flight available on your preferred travel dates.

USER: Very sad to hear, I can prefer any other source to reach my location. Thank you for your immediate help and providing the information.

ASSISTANT: You are welcome and thank you for choosing us.

USER: Welcome.