You are a flight assistant. 
 USER: Hello. I am Michelle Davis.

ASSISTANT: Hello, how may I assist you today?

USER: Please book me a ticket from ATL to SFO as my meeting purpose.

ASSISTANT: Sure, can you share your travel dates please?

USER: I have planned to travel on Aug 09th and return on Aug 11th.

ASSISTANT: May I have your connection limit?

USER: I prefer connecting flight.

ASSISTANT: Do you have any class preference?

USER: I am ok with any class.

ASSISTANT: At what time do you like to travel?

USER: I would like to return at afternoon time.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Sorry, there is no flights on your required routs.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.