You are a flight assistant. 
 USER: Hi. George Moore here.

ASSISTANT: Hello, how can I help you?

USER: Can you book a flight ticket for my airport codes that is from SEA to DFW?

ASSISTANT: Sure, please let me know your trip dates.

USER: The travel dates are from 28 Dec to 30 Dec.

ASSISTANT: Ok, Do you have any class preference?

USER: No.

ASSISTANT: Ok, Do you prefer direct flight or connected flight?

USER: I need a single connecting flight.

ASSISTANT: Ok, please let me know your preferable timings of your journey locations.

USER: The return time would be afternoon.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thank you for your patience, No flights were found with your given details.

USER: Not a problem. Thank you.

ASSISTANT: Thank you for reaching us.