You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you please help me in flight ticket booking process from CLT to SFO?

ASSISTANT: Sure, can you please let me know your trip dates?

USER: Thank you for your response, I want to take off on Dec 05 and book my return ticket also on Dec 07.

ASSISTANT: Do you have any connection limit preference?

USER: I will prefer to travel in direct flight.

ASSISTANT: Could you help me with your name please?

USER: Sure, my name is Rebecca Anderson.

ASSISTANT: Sorry, there is no flight available for the mentioned dates.

USER: Oh! It's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.