You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I have to attend a Live Concert at Las Vegas, could you please help me with booking a flight ticket from DFW to LAS?

ASSISTANT: Sure, let me know your travelling dates?

USER: I would like to depart on Mar 9th and return on Mar 11th.

ASSISTANT: Do you have any connection limit?

USER: I am looking for a connecting flight in normal- cost airlines.

ASSISTANT: Is there any other preferences?

USER: I am looking for a economy class ticket.

ASSISTANT: Can I know your good name?

USER: I am Brian White.

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

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us.