You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Cynthia Taylor.

ASSISTANT: How can I assist you?

USER: Can you please help me in booking a flight ticket from LAS to CLT?

ASSISTANT: Ok, may I know your travelling dates?

USER: My travelling dates are from Dec 24th to Dec 26th.

ASSISTANT: Can you please mention your arrival and depart timings?

USER: I want to return in the morning.

ASSISTANT: May I know your connection limit?

USER: I want a connection in between my journey.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Can you please mention your airline preference?

USER: I don't have any airline preference.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Sorry, no flights available on your route.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.