You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Amy Davis here.

ASSISTANT: How may I assist you?

USER: I want to book a flight from IAD to CLT, can you help me?

ASSISTANT: Sure, I will help you. Can I have your planned travel dates please?

USER: My travelling dates are from Nov 4th to Nov 6th.

ASSISTANT: Do you have any preferences?

USER: I need 1 connection.

ASSISTANT: There is a direct flight in Delta airlines with fare 200. Can I book your ticket?

USER: You can book it.

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

USER: Thank you for choosing us. Thank you for helping me.

ASSISTANT: Thank you for approaching us.