You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please book a flight ticket from DCA to SEA?

ASSISTANT: Sure, please share your planned trip dates?

USER: Thank you. I have planned my travel dates as July 26 and July 28.

ASSISTANT: Do you have any connection limit?

USER: Yes, I am looking for single connecting flight.

ASSISTANT: Let me know your class preference?

USER: I am ok with any class.

ASSISTANT: Any other requirements to be met?

USER: No, I do not have any more specifications to get a flight ticket.

ASSISTANT: May I know your name?

USER: Sure, myself Jonathan Wilson.

ASSISTANT: Ok, we found connecting flight 1010 in Frontier Airline with fare of 600. Shall I proceed with business class?

USER: That is fine, please proceed with booking.

ASSISTANT: Ok, your flight ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.

USER: Most welcome.