You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: Please help me out in booking the ticket from SEA to DEN.

ASSISTANT: Sure, may I know your planned travel dates?

USER: My trip dates will be Oct 28 to Oct 30.

ASSISTANT: Do you have any limits on number of connections?

USER: I need a connecting flight.

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

USER: Business is my class preference.

ASSISTANT: May I know your name for the booking process?

USER: Frank Edwards is my name.

ASSISTANT: Sorry, no flights are available on your required dates.

USER: That's ok, thank you.

ASSISTANT: Welcome, thank you for reaching us.