You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I need to travel to ORD for business deal, can you please reserve my flight ticket from IAD?

ASSISTANT: May I know your trip dates?

USER: Sure, my travelling dates are from Nov, 03 to Nov, 05.

ASSISTANT: Do you need any connections?

USER: Yes, my connection limit should be one.

ASSISTANT: Are there any other preferences?

USER: Yes, I should be prefer economy due my budget issue.

ASSISTANT: May I know your name?

USER: Sure, my name is Gary Scott here.

ASSISTANT: Sorry to say that, there are no flights found with your details.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for choosing us.