You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I need to travel to PHX for attending music concert, can you please help me to reserve ticket from IAD?

ASSISTANT: Yes, can you share me your travelling dates?

USER: Sure, my travelling dates are Apr, 02 and 04.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight to travel.

ASSISTANT: Give me a moment.

USER: Sure, take your time.

ASSISTANT: I have found an economy class ticket with a price of 100 and 1 connecting flight.

USER: Please go ahead for booking.

ASSISTANT: Can I know your name for booking?

USER: Sure, my name is Gregory Brown here.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thank you for contacting us.