You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Michael Lee.

ASSISTANT: Michael, how can I aid you?

USER: I am going to participate in an adventurous show at Las Vegas, will you please book me a ticket from LAS to LAX?

ASSISTANT: Sure, may I know your travelling dates please?

USER: I want to travel on 04/03 and 04/05.

ASSISTANT: Michael, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to inform you, there is no flight available at your requested dates.

USER: That's ok, I will go by road way.

ASSISTANT: Would you like to travel with another dates?

USER: No, thank you for your information.

ASSISTANT: Thank you for approaching us. Have a nice day.