You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am looking for a flight ticket to travel to Los Angeles, please reserve the flight ticket from LAS to LAX.

ASSISTANT: Sure, let me know your trip dates?

USER: I am happy for your response. My trip dates are Apr 30th and May 2nd.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I would like to travel in a single connecting flight.

ASSISTANT: Is there any other preferences?

USER: Ok, please provide me a departing flight which is in the evening time.

ASSISTANT: Can I know your good name?

USER: My name is Emma Williams.

ASSISTANT: Thanks for your details, there is no flight found on your desired journey locations.

USER: Oh! It is sad to hear from your end. I will choose another alternative to reach my destination. Anyways thank you.

ASSISTANT: Thank you for availing us.

USER: You are welcome.