You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I need to travel to LAS for my personal work, can you please reserve my flight ticket from IAH?

ASSISTANT: Sure, may I know your journey dates?

USER: Sure, my planned travelling dates are from Jul, 23 to Jul, 25.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a direct flight to travel.

ASSISTANT: May I know your good name?

USER: Sure, my name is Justin Parker here.

ASSISTANT: We found an airline: Delta, flight number: 1005 and price is 100 with couple of connections. Shall I proceed to booking?

USER: Ok, I need only direct flight to travel, do not proceed to booking.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.