You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: I am Mark Jones. I want to travel from SEA to DFW. Can you book a flight ticket for me?

ASSISTANT: Sure, I am here to help you. When you are willing to travel?

USER: I want to fly in the flight on July 03 and July 05.

ASSISTANT: Do you have any class preference?

USER: No, but I want to depart in evening time.

ASSISTANT: Do you have any connection limit?

USER: I want to have a connection of 1.

ASSISTANT: Please wait for a moment. Sorry, we found no flights on your given dates.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for reaching us.