You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what services are you seeking from us?

USER: Can you please help me to book a flight from DEN to HOU?

ASSISTANT: Sure, please share me your trip dates.

USER: I want to depart on Oct 6 and need to return on Oct 8.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT:  If you can help me with your name, I can begin looking up for the availability of flights.

USER: Sharon Smith here.

ASSISTANT: May I know if you prefer to have any other comforts in your journey?

USER: I do not have any other specifications.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for contacting us.