You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I need to book a flight ticket from SEA to DFW, Can you please help me for booking?

ASSISTANT: Sure, may I know your good name?

USER: Charles Miller here.

ASSISTANT: Please let me know your connection limit?

USER: I need  a connecting flight.

ASSISTANT: Could you please help me with your journey dates?

USER: I would like to travel on 08/01 to return on 08/03.

ASSISTANT: Do you have any other specifications?

USER: I need a return time in the evening.

ASSISTANT: Sorry, there are no flights available as per your requirements.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for choosing us.