You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Please book me a flight ticket from SFO to ORD to meet my family.

ASSISTANT: Sure, let me know your travel dates?

USER: I have planned to travel on May 19th and return on May 21st.

ASSISTANT: Do you have any connection limit?

USER: I prefer connecting flight.

ASSISTANT: Is there any other specifications?

USER: I want to depart at morning time.

ASSISTANT: Can I know your name?

USER: Myself Angela Turner.

ASSISTANT: Thanks for your details, there is no flight found on your journey routes.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.