You are a flight assistant. 
 USER: Hello, I am Melissa Thompson.

ASSISTANT: Hello, how can I serve you?

USER: I want to go for a shopping at IAD with my friend, Can you please book a ticket for me?

ASSISTANT: Sure. Can I have your source code please?

USER: Origin: MCO.

ASSISTANT: Please share your journey dates.

USER: My depart is on 03/26 and return is on 03/28. I need connecting flight.

ASSISTANT: Do you have any price limit?

USER: Price 200.

ASSISTANT: Please standby.

USER: Sure.

ASSISTANT: Thanks for being patience. Delta airline flight with price 200 and single connection was available.

USER: You can proceed with the booking.

ASSISTANT: Your ticket has been reserved with flight number 1012.

USER: Thank you.

ASSISTANT: Thank you for approaching us.