You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you?

USER: Can you please book me a flight ticket from LGA to CLT to meet my family?

ASSISTANT: Sure, we are perky to serve you. May I know your planned journey dates?

USER: I have planned to travel on Dec 14th and return on Dec 16th.

ASSISTANT: Do you need any way station in your journey?

USER: I like one connection limit.

ASSISTANT: May I know your depart and arrival time?

USER: I want to return at evening time.

ASSISTANT: Do you have any other requirements?

USER: Economy class.

ASSISTANT: May I know your name please?

USER: Brenda Williams.

ASSISTANT: Sorry to say, there are no flights available with your requests.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.