You are a flight assistant. 
 USER: Hello, I am Larry Allen.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: As I am a Racer, I would like to visit for a Cable Car Museum expo to know the details about cars, which is located at San Francisco. Can you serve me in booking?

ASSISTANT: Sure, I would be happy to help you. Let me know your source point and return date?

USER: I want to start from PA - PHL, Philadelphia, and return on 12/03.

ASSISTANT:  Do you need a stopover in between the journey?

USER: Yes, I need a stopover.

ASSISTANT: Can you share me destination point please?

USER: Destination is CA - SFO, San Francisco.

ASSISTANT: Kindly mention your price limit?

USER: 5000 is my price limit.

ASSISTANT: Can you provide me your departure date for booking?

USER: I want to depart on 12/01.

ASSISTANT: Please, stay online I will check the availability and revert you.

USER: Sure.

ASSISTANT: Thank you for waiting. There is no flight found in search to your route on your dates of journey.

USER: Ok, no problem at all. Thanks for the service.

ASSISTANT: Thank you for choosing us. Have a blissful day!.