You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I would like to book a connecting flight. could you please help me with booking a flight ticket?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: Sure, I want to start my journey on Jan 19 and end my journey on Jan 21.

ASSISTANT: Can you please share your airport codes?

USER: Sure, I intend to board from JFK and land at SFO.

ASSISTANT: May I know your good name please?

USER: I am Sharon Green.

ASSISTANT: Do you have any airlines preference?

USER: Sure, I am comfortable with any type of airline.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: No worries, I will choose another alternative to reach my destination.

ASSISTANT: Thank you for approaching us.

USER: You are welcome.