You are a flight assistant. 
 USER: Hello. I am Karen Jones.

ASSISTANT: Hello, how can I help you?

USER: Can you please assist me in booking a flight ticket from DEN to SEA to attend a film festival?

ASSISTANT: Sure, please share your travelling dates.

USER: I am planning to depart on Apr 07 and return on Apr 09.

ASSISTANT: Do you have any connection preference?

USER: I prefer a flight with single connection.

ASSISTANT: Do you have any other specifications on your trip?

USER: My depart time should be afternoon.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry we didn't find any flights with your details.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us, have a good day.