You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you help me to book a flight ticket from ATL to LAX?

ASSISTANT: Can you share your trip dates?

USER: My trip dates are Aug 05 and Aug 07.

ASSISTANT: Do you need any connections?

USER: I prefer connecting flight for this trip.

ASSISTANT: Are there any other preferences?

USER: I would like to depart in the afternoon time.

ASSISTANT: May I know your name?

USER: I am Mark Hall.

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

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.