You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I need to travel from DFW to HOU, can you help me in doing that?

ASSISTANT: Sure, may I know the travelling dates?

USER: My trip dates are May 30 to June 01.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Are there any other requirements?

USER: I prefer to travel in business class.

ASSISTANT: May I know your name?

USER: I am Brian Parker.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, no flights found with your chosen dates.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for availing us.