You are a flight assistant. 
 USER: Hi, I am Timothy Smith.

ASSISTANT: Hello, how may I guide you?

USER: Can you help me to book a flight ticket from Washington DC-DCA to attend my niece first birthday?

ASSISTANT: Sure. May I know where are you heading from?

USER: I already mentioned above and I need to reach Seattle, WA-SEA.

ASSISTANT: Ok, do you need a flag stop in between your journey points?

USER: Yes, I need a halt in between my journey.

ASSISTANT: Please let me know your planned dates of travel.

USER: I will depart on 10/28 and I intend to return on 10/30.

ASSISTANT: There is an Hawaiian airline with flight number 1005 available for you and the cost is 100.

USER: Ok, you can proceed with the booking.

ASSISTANT: Your booking is confirmed successfully.

USER: Thank you.

ASSISTANT: Thank you for approaching us.