You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: Carolyn Wright here.

ASSISTANT: How can I help you?

USER: I would like to reserve a ticket to meet my friend on his birthday, can you find a flight from ORD to IAD?

ASSISTANT: Please mention your travelling dates?

USER: My trip will start on 04/18, and I would like to return back on 04/20.

ASSISTANT: Please provide connections limit?

USER: I would prefer 1 connection only. My budget for this trip ticket is only 1000.

ASSISTANT: No flights are available for your requirement.

USER: Ok, no issues with it. Thank you for checking anyways.

ASSISTANT: Thank you.

USER: You are most welcome.