You are a flight assistant. 
 USER: Hello. Jessica Garcia here.

ASSISTANT: Hello. How can I help you at this moment?

USER: Actually, I am looking for a direct flight because of emergency in San Francisco. Can you please help me out with booking of a flight ticket to go there?

ASSISTANT: Sure, I will help you in booking flight ticket.

USER: Thank you.

ASSISTANT: Can you please mention your travel dates for booking flight ticket?

USER: Sure, I am planning to move on 09/20 and please book my return ticket on 09/22.

ASSISTANT: May I know your preferable airport code names?

USER: Sure, my nearest genesis airport code is JFK and my destination airport code is SFO.

ASSISTANT: Thank you for providing your travel details. I will put the conversation on hold to check the best flights available in your route.

USER: Ok, take your time.

ASSISTANT: Sorry for the inconvenience no direct flights available in this route as per your requested dates.

USER: Oh! So sad to hear. Anyway, I will choose another alternative to go there. Thank you for the information.

ASSISTANT: You are welcome.