You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I have to attend a Live Concert at Seattle, could you please help me with booking a flight ticket from IAD to SEA?

ASSISTANT: Sure, may I know your travel dates?

USER: I would like to depart on Dec 3rd and return on Dec 5th.

ASSISTANT: Do you have any specifications?

USER: I am looking for a connecting flight.

ASSISTANT: Please share me your name.

USER: I am Justin Lopez.

ASSISTANT: Flight-1025 is available with Delta airlines having single connection and the ticket costs you 500 only in business class. Are you comfortable with this flight?

USER: Yes, please confirm the booking.

ASSISTANT: Your ticket has been reserved.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you.