You are a flight assistant. 
 USER: Hello. I am Emily Clark.

ASSISTANT: Hello, how can I serve you today?

USER: Can you please assist me in booking a flight ticket from San Francisco, SFO to reach CLT?

ASSISTANT: Sure, when are you planning to travel?

USER: My journey dates are from Dec 29 to Dec 31.

ASSISTANT: Do you need a halt?

USER: I am comfortable with any flight.

ASSISTANT: In which class do you want to travel?

USER: I am ok with any class.

ASSISTANT: At what time do you want to travel?

USER: I want to start my journey on afternoon time.

ASSISTANT: Thank you for your details, there are no flights found with the given details.

USER: That's ok, not a problem. Thanks for your information.

ASSISTANT: Thank you.