You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I would like to book a flight ticket to DFW from LAS. Can you help me in this?

ASSISTANT: Sure, on which dates you are willing to travel?

USER: Thank you, I am willing to start on 04/30 and return will be on 05/02.

ASSISTANT: Is there any connection limit?

USER: No, I am looking for a direct flight.

ASSISTANT: May I know your name please?

USER: Emma Williams, is my name.

ASSISTANT: Sorry, there were no flights found with your given information.

USER: That's ok, not an issue. Thanks for your kind information.

ASSISTANT: Thanks for opting us.