You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to travel from DFW to IAH as a business trip.

ASSISTANT: Sure, may I know your name?

USER: Ruth Parker here.

ASSISTANT: Can I know your trip dates?

USER: My journey dates are 07/18 and 07/20.

ASSISTANT: May I know your connection limit?

USER: I need only direct flight.

ASSISTANT: May I know your other preferences?

USER: No.

ASSISTANT: Sorry, there are no flights available on your travelling dates.

USER: No problem, Thanks for the information.

ASSISTANT:  Thank you for choosing us.