You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I would like to spend my free time at Las Vegas, please help me in booking a ticket from DFW to LAS.

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: My journey dates are on Jan 27 and Jan 29.

ASSISTANT: Do you need break in between the journey?

USER: Yes, I need a break in between my journey.

ASSISTANT: May I know your name please?

USER: My name is Cynthia Adams.

ASSISTANT:   Would you let us know if you have any other preferences?

USER: No, thank you for asking.

ASSISTANT: Please stand by.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, sorry no flights found with your details.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for reaching us, have a nice day.