You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to travel from JFK to AUS. Can you help me to book a flight ticket?

ASSISTANT: Sure, provide me with the travel dates?

USER: I want to travel in the flight on Mar 23 and Mar 25.

ASSISTANT: Let me know your name please?

USER: I am Jessica Clark.

ASSISTANT: Are there any preferences that you want to avail?

USER: I want to travel in business class.

ASSISTANT: Would you like to travel by connecting or direct flight?

USER: I want to have a connecting flight.

ASSISTANT: Give me a moment.

USER: Ok, take your time.

ASSISTANT:  Jessica Clark. I regret to inform that there are no flights on your route with the given dates.

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you for reaching us.