You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to travel in a business class flight, can you please reserve a flight ticket for me?

ASSISTANT: Please share your travelling dates.

USER: Sure, my departure is on Oct 08 and please book my return ticket also on Oct 10.

ASSISTANT: Can you share your airport codes?

USER: Sure, I want to travel from SFO to DCA.

ASSISTANT: Do you need any connection limit?

USER: Yes, I need single connection.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Kindly share your name.

USER: Sure, my name is Jacob Robinson.

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

USER: Oh! Sad to hear that. Anyway, I will find another alternative to reach my location. Thank you for the information.

ASSISTANT: Thank you for choosing us.

USER: Welcome.