You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: I am Susan Lopez. Please book me a ticket from LGA to IAD to meet my family.

ASSISTANT: When you are willing to travel?

USER: I have planned to travel on Nov 29th and return on Dec 01st.

ASSISTANT: Let me know your connection limit?

USER: I prefer connecting flight.

ASSISTANT: Do you have any other requirements?

USER: I would like to return at afternoon.

ASSISTANT: In which class would you like me to book your flight ticket?

USER: I am ok with any class.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.