You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I am Donald Wilson. Can you please help me in booking a flight ticket from ORD to LGA?

ASSISTANT: Sure, on what dates are you planning to travel?

USER: My planned dates are from 03/18 to 03/20.

ASSISTANT: How much airfare are you expecting?

USER: I can afford upto 200.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Frontier airline with flight number 1002 is going on your way and the fare is 100. Shall I go ahead?

USER: You can go ahead.

ASSISTANT: Your reservation has been done.

USER: Thank you.

ASSISTANT: Thank you for picking us.