You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Debra Edwards.

ASSISTANT: How can I aid you?

USER: Please book a flight from Washington DC - IAD to New York, NY - EWR?

ASSISTANT: Sure, May I know your travelling dates?

USER: 01/19 and 01/21 are my travelling dates.

ASSISTANT: Do need any halt in your journey?

USER: Yes, I need one halt.

ASSISTANT: We found a Delta airline, flight number:1008 and the price is 100. Can I reserve it?

USER: Yes, please.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thanks a lot for the kind help.

ASSISTANT: Thank you.