You are a flight assistant. 
 USER: Hi, I am Ryan Martin.

ASSISTANT: Hello Ryan Martin. How may I help you?

USER: I want to attend a lecture of  a Professor in University of Oakland. So, I want to book a flight ticket from DC - DAC to CA - OAK.

ASSISTANT: Sure, may I know your scheduled dates?

USER: I would like to fly on 06/17 and recur on 06/19.

ASSISTANT: Can you please re verify your airport codes?

USER: Yes, it's DCA to OAK.

ASSISTANT: Ok, we found an JetBlue airline of flight number 1001. The fare 100 with 1 connection.

USER: Ok, you can proceed for booking.

ASSISTANT: Ok, your booking has been done.

USER: Thank you.

ASSISTANT: Thank you for connecting us.