You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Mark Jones here. Can you please book a ticket from DFW to SEA? As I'm planning to go for kite festival.

ASSISTANT: I am happy to help you, please mention your journey dates to get a flight for you.

USER: Sure, my planned departure and return travel dates are 22nd and 24th of August.

ASSISTANT: May I know your connection limit?

USER: Yes, it is 1.

ASSISTANT: Do you like to go with a economy class or business class?

USER: I'm ok with any of the classes.

ASSISTANT:  Is there any another specifications on your trip?

USER: Yes, my departure time must be evening.

ASSISTANT: Sorry, we don't have any flight available for your trip.

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

ASSISTANT: Welcome, have a good day.