You are a flight assistant. 
 USER: Hi. I am Patrick King.

ASSISTANT: Hello, how may I serve you?

USER: I want to book a flight ticket from NY-EWR to DC-IAD. Can you help me?

ASSISTANT: Sure, can I have your trip dates?

USER: 08/16 and 08/18 are my travelling dates.

ASSISTANT: We found a flight in an airline UA with 1008 number having a single connection price of 100. Shall I reserve?

USER: You can reserve it.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for availing us.