You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Christopher Parker here.

ASSISTANT: How may I assist you today?

USER: I'm planning to visit Charlotte, can you please book a ticket from LAS to CLT?

ASSISTANT: May I know your travelling dates, please?

USER: Yes, my planned departure and return travel dates are 12th and 14th of November.

ASSISTANT: Do you need any specifications?

USER: Yes, I want to depart on the morning in economy class flight.

ASSISTANT: Please wait a moment.

USER: Sure, ensure that connection limit doesn't cross 1.

ASSISTANT: Sorry, there are no flight tickets available on your journey dates.

USER: That's ok, thank you for giving the information.

ASSISTANT: Thank you for reaching our service.