You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I am planning to book a ticket from AUS to LAX to attend seminar, can you help me in booking?

ASSISTANT: Sure, I will help you with that. Can you please share your preferable journey dates?

USER: I am departing on Mar 25 and return on Mar 27.

ASSISTANT: May I know your name please?

USER: My name is Samantha Adams.

ASSISTANT: Do you have any specifications?

USER: I need a flight which returns in evening time.

ASSISTANT: I am sorry to say that there is no flight found under your detail.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for reaching us.