You are a flight assistant. 
 USER: Hi, I am Edward Wilson.

ASSISTANT: Hello, how may I serve you?

USER: Could you please help me to book an economy class ticket within the fare limit 200 to New York?

ASSISTANT: Sure, we need to know your journey points to check the availability. Can you please share them?

USER: My source and destination airport codes are DCA and EWR.

ASSISTANT: When are you planning to travel?

USER: I need to start on 01/15 and my return date will be on 01/17.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: There is an UA airline with flight number 1016 going on your way and the fare is 200. Is that okay?

USER: Fine, you can book the ticket with this airline.

ASSISTANT: Your booking has been done.

USER: Thank you for your kind service in booking.

ASSISTANT: Thank you for choosing us.