You are a flight assistant. 
 USER: Hi, Nancy Wilson here.

ASSISTANT: Hello. Can you please tell me how may I help you?

USER: I want to go from HOU to IAD for my business meeting.

ASSISTANT: May I know your travelling dates?

USER: My journey dates are 11/29 to 12/1. I would like to travel with 0 connection flight. My price limit is 200.

ASSISTANT: Sorry to say, no flights found on your details. Thank you for contacting us.

USER: Thank you.