You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Dennis Hernandez here. As I am having a convocation in Howard University, please help me in booking the ticket from SFO to DCA.

ASSISTANT: That's good to hear. May I know your journey dates please?

USER: My journey dates are from 10/09 to 10/11.

ASSISTANT: Dennis, I have found a flight with Frontier airlines matching with your details. Shall I proceed?

USER: Ok, book my ticket please.

ASSISTANT: Your ticket is booked and the flight number is 1011.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.