You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How best can I aid you today?

USER: I want to attend a birthday party in Chicago, ORD. Can you help me with the booking process?

ASSISTANT: Sure, I will help you with that. May I know your travel dates for your journey for further search process?

USER: Sure, My travel dates are Feb 19 and 21.

ASSISTANT: Let me know your source airport code, please.

USER: My source is from San Francisco, SFO.

ASSISTANT: Do you have any limit for your connection preference?

USER: Yes, I prefer connecting flight for this journey.

ASSISTANT: May I know your class preference, please?

USER: I am comfortable with any class.

ASSISTANT: Let me know about your airline preference, please.

USER: I am ok with any airline.

ASSISTANT: May I know your departure and timings, if any?

USER: As, I am unable to travel in the evening time, So please book a flight for me in the morning time.

ASSISTANT: Please, provide me your name for further documentation process.

USER: Sure, Joseph Mitchell here.

ASSISTANT: May I know your given morning time preference is for departure or arrival timings?

USER: I want to return in the morning time.

ASSISTANT: Ok, please be on hold for a while. I will check with the availability of lights.

USER: Sure.

ASSISTANT: Sorry for the inconvenience, there are no flights available as per your specifications on your given routes.

USER: Ok, thank you.

ASSISTANT: Thank you for opting us, have a good day.