You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Lisa Turner. I am planning to visit Washington, can you please help me in booking a flight ticket?

ASSISTANT: Sure, can I know the journey dates please?

USER: My journey dates are July 26th and July 28th.

ASSISTANT: Could you please provide the airport codes?

USER: My airport codes are from ATL to IAD.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: There is a connecting flight in Delta airline with price 100, can I book it?

USER: You can book it.

ASSISTANT: Your ticket has been booked with flight number 1000.

USER: Thank you.

ASSISTANT: Thank you for approaching us.