You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I would like to book a ticket from LAX to IAD, can you please help me out?

ASSISTANT: Can you share your trip dates?

USER: I am travelling on these dates May 13th and 15th.

ASSISTANT: Do you need any connections?

USER: I need single connected flight.

ASSISTANT: Are there any other preferences?

USER: I prefer business class.

ASSISTANT: May I know your name?

USER: Emma Lewis here.

ASSISTANT: Sorry, there is no flight found with your details.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for reaching us.