You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How may I help you today?

USER: My name is Michelle Evans.I need to book a flight ticket from TX-DFW on 07/01 to WA-SEA on 07/03.

ASSISTANT: Ok, Do you have any other requirements?

USER: Yes, I need one connection limit with a price limit should be 200.

ASSISTANT: Sorry for the inconvenience, Unfortunately there are no flights available with your preferences.

USER: Ok, thanks for your information.

ASSISTANT: Thank you for contacting us. Have a Great day.