You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, firstly may I know your name please?

USER: I am Janet Carter.

ASSISTANT: How can I support you now?

USER: I would like to book a ticket from EWR to LAS, can you help me?

ASSISTANT: Sure, I will help you with that. May I know the travelling dates please?

USER: My travel dates are 12/22 and 12/24.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Janet, there are no flights found on your requested dates.

USER: No problem, thank you for checking.

ASSISTANT: Thank you for contacting us, have a nice day.