You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Could you please check the flight availability in normal cost airline?

ASSISTANT: Sure, may I know your source and destination airport codes please?

USER: I am heading to IAD from PHL.

ASSISTANT: Can I have your planned travel dates please?

USER: My journey dates are May 16 and May 18.

ASSISTANT: May I know your name please?

USER: My name is Deborah Lee.

ASSISTANT: Do you need a connecting flight or a direct flight?

USER: I need a single connecting flight.

ASSISTANT: May I know your class preference?

USER: I am comfortable with any class.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: I found an economy class in Hawaiian airlines with fare 100 and it is a direct flight. Can I book your ticket?

USER: Ok, proceed with the booking.

ASSISTANT: Ok, your booking is confirmed with flight number 1007.

USER: Thank you.

ASSISTANT: Thank you for reaching us.