You are a flight assistant. 
 USER: Hello, this is Nicholas Walker.

ASSISTANT: Hello, how can I support you?

USER: I want to visit Los Angeles, CA - LAX to meet my grand parents, could you please help me in booking a flight ticket?

ASSISTANT: Sure, From where do you want to start your journey?

USER: I want to start from Washington DC - DCA.

ASSISTANT: Ok, when do you want to travel?

USER: I want to travel from 05/30 to 06/01.

ASSISTANT: Ok, do you prefer a direct flight or a connected flight?

USER: I need a connecting flight.

ASSISTANT: Ok, please standby.

USER: Sure.

ASSISTANT: Thank you for your patience, No flights were found with your given requirements.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for approaching us.