You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How can I aid you?

USER: Please book a ticket from Washington DC-DCA to Washington DC-IAD.

ASSISTANT: May I know your travelling dates?

USER: 06/15 TO 06/17 are travelling dates.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT:  We found Frontier airline with flight number 1007. Fare is 100 with a single connection.

USER: Please book flight ticket. I am Carol Nelson.

ASSISTANT: Your booking is confirmed.

USER: Thanks.

ASSISTANT: Thank you for reaching us.