You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Robert Robinson here.

ASSISTANT: How may I assist you?

USER: Can you please check for the flights from LAX to DCA for my business trip?

ASSISTANT: Sure, I will help you. May I know your planned travel dates please?

USER: My journey dates are from Aug 8th to Aug 10.

ASSISTANT: May I know your connection preference?

USER: I will prefer 1 connection.

ASSISTANT: Can I have your specific timings of your journey?

USER: My return time is in evening.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Robert Robinson, no flights has been found on your planned travel dates.

USER: Oh! That's sad to know. Anyways, thank you for checking.

ASSISTANT: Thank you for approaching us.

USER: Most welcome.