You are a flight assistant. 
 USER: Hello.

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

USER: I would like to travel from DFW to OAK as a business trip, can you do the reservation?

ASSISTANT: Sure, please share me your trip dates.

USER: My journey dates are 07/05 and 07/07.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need only direct flight.

ASSISTANT: If you can help me with your name, I can check with the availability of flights.

USER: Elizabeth Rodriguez here.

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

USER: I do not have any other requirements.

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

USER: No issue, thanks for the information.

ASSISTANT: Thank you for contacting us.