You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Karen Hernandez.

ASSISTANT: How may I aid you today?

USER: I want to book a ticket from SEA to PHL to attend seminar, can you help me in booking?

ASSISTANT: Sure, I will help you with that. Can you please provide your planned dates of travelling?

USER: I am departing on Dec 31 and return on Jan 02.

ASSISTANT: At what time are you planning to depart and return?

USER: I want to return in afternoon time.

ASSISTANT: Do you have any class preference?

USER: I am ok with any class.

ASSISTANT: Any connection limit do you have?

USER: I want a flight with connection limit 0.

ASSISTANT: Wait for a minute to check the flights on your route.

USER: Sure, take your time.

ASSISTANT: We regret to inform you that, there are no direct flights are moving towards your region with your requested dates of travelling.

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

ASSISTANT: Thank you for utilizing our services, have a great day.