You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you at this moment?

USER: Please book a flight ticket from BOS to CLT?

ASSISTANT: May I know your journey dates?

USER: My journey dates are July 05 and July 07.

ASSISTANT: May I know any particular timings to travel?

USER: No.

ASSISTANT: May I know any airline preference?

USER: No.

ASSISTANT: Is there any connection limit?

USER: I need a direct flight.

ASSISTANT: May I know your class preference?

USER: I am comfortable with any class.

ASSISTANT: Can I have your good name?

USER: I am Kathleen Walker.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Sorry, there were no flights running currently with your required dates to travel.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for opting us.