You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Timothy Gonzalez. I want to book a flight ticket with a single connection. Could you help me in booking a flight ticket?

ASSISTANT: Sure. May I know your travelling dates?

USER: My departure is 06/05 and my return date on 06/07.

ASSISTANT: Can I have your airport codes please?

USER: I am planning to visit Renwick Gallery in DC - IAD and my origin from AZ - PHX.

ASSISTANT: Ok, please wait.

USER: Sure, my price limit is 5000.

ASSISTANT: Thanks for waiting, UA airline flight with one connection and 1008 number was available. Shall I proceed?

USER: You can proceed to booking.

ASSISTANT: Your ticket has been reserved.

USER: Thanks for your helping hand.

ASSISTANT: Thank you for contacting us.