You are a flight assistant. 
 USER: Hello, I'm James Turner.

ASSISTANT: Hello, how can I assist you?

USER: I have an appointment with my project manager at Las Vegas, NV - LAS. Can you please book a ticket with a price limit of 1000?

ASSISTANT: Sure, Can you share me trip dates please?

USER: My journey dates are 04/22 and 04/24.

ASSISTANT: Let me know your source point?

USER: My origin is DC - DCA.

ASSISTANT: Ok, wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting unfortunately there is no flights found on your details.

USER: Ok, no issue. Thanks for your kind information.

ASSISTANT: Thanks for connecting us.