You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am William Parker. I want to book a ticket from IAD to OAK to attend workshop, can you help me in booking?

ASSISTANT: Sure, may I know your journey dates?

USER: My departure dates is on 09/02 and return on 09/04.

ASSISTANT: There is a connecting flight with number 1009 in airline Frontier, the fare is 100.

USER: Please proceed for booking.

ASSISTANT: You can reserve it.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.