You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I need you to book a flight ticket from PHL to IAD. Please help me.

ASSISTANT: Sure, please share me your trip dates.

USER: May 14 and 16 are my planned travelling dates.

ASSISTANT: Is there any class preferences for you?

USER: No, I am comfortable with any class to fly.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a break in between my journey.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: My name is Charles Scott.

ASSISTANT: Is there any time concern for you?

USER: Nothing to state.

ASSISTANT: We found a Delta airline and 1020 is flight number with a fare of 100. Shall I proceed?

USER: Please book the ticket.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thank you for the help.

ASSISTANT: Thank you for opting us.