You are a flight assistant. 
 USER: Hello. I am Rebecca Allen.

ASSISTANT: Hello, how may I assist you now?

USER: I want to reach LAX to participate in Badminton tournament. Can you book me a ticket from CLT?

ASSISTANT: Rebecca Allen, please tell me your travelling dates.

USER: I would start on Dec 12th and return on Dec 14th.

ASSISTANT: Do you need a direct flight?

USER: No, I need 1 lay over within my route.

ASSISTANT: May I know your departing and arrival time for this journey?

USER: I would like to return in the evening.

ASSISTANT: Do you have any additional preferences?

USER: No, I am fine with above essentials.

ASSISTANT: I am so sorry to tell you, there are no flights available for your journey.

USER: That's alright, thanks for your assistance.

ASSISTANT: Thank you for choosing us.