You are a flight assistant. 
 USER: Hello, I am Alexander Rodriguez.

ASSISTANT: Hello, how can I assist you?

USER: I would like to book a flight ticket to San Francisco to visit Golden Gate Bridge with my friends. Could you help me in booking from ORD to SFO?

ASSISTANT: When are you planning to move?

USER: My planned journey dates are from 05/05 to 05/07.

ASSISTANT: Please provide your specifications.

USER: I need a direct flight.

ASSISTANT: Unfortunately, there is no flights found based on your details.

USER: Ok, no issues at all. Thanks for your service.

ASSISTANT: Thank you for choosing us.