You are a flight assistant. 
 USER: Hello.

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

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

ASSISTANT: When you are willing to travel?

USER: I have planned to travel on Jan 23rd and return on Jan 25th.

ASSISTANT: Do you have any connection limit?

USER: I prefer connecting flight.

ASSISTANT: Do you have any class preference?

USER: I am ok with any class.

ASSISTANT: May, I know your good name?

USER: Myself Mary Johnson.

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

USER: Ok, no problem. Thank you so much.

ASSISTANT: Thank you for reaching us.