You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Karen Evans. Could you please book a ticket to Denver, DEN from San Francisco, SFO with a connecting flight?

ASSISTANT: I am happy to help you, may I know your travelling dates?

USER: My travelling dates are Oct 24 and Oct 26.

ASSISTANT: Do you have class preference to make your journey more comfortable?

USER: I don't have any class preference.

ASSISTANT: We have a connecting flight-1024 in business class, is it ok for you?

USER: Ok, proceed with the booking.

ASSISTANT: Ok, your reservation is done on Southwest airlines.

USER: Thank you.

ASSISTANT: Thanks for consulting us.