You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please make a reservation from CLT to LAS to attend a marriage in Las Vegas?

ASSISTANT: Yes, can you tell me your dates of travel?

USER: My journey dates are on Nov 12th and 14th.

ASSISTANT: Do you have any other preferences?

USER: I prefer a flight with single connection. And my  return should be in the morning.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

USER: Ok, no problem.

ASSISTANT: Can I know your name?

USER: My name is Christine Williams.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your information.