You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Charles Baker and I want to book the flight ticket from OAK to CLT. Can you please help me?

ASSISTANT: Sure, will you share me your travelling dates?

USER: My travel dates are 05/18 and 05/20.

ASSISTANT: Do you require any connection limit?

USER: Yes, I need a connection.

ASSISTANT: Is there any class preference?

USER: I am comfortable with any class.

ASSISTANT: May I know any other specifications?

USER: I would like to return in the afternoon.

ASSISTANT: Ok, please be on hold.

USER: Ok, take your time.

ASSISTANT: Sorry, no flights found with your requirements.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.