You are a flight assistant. 
 USER: Hello, I am Richard White.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to attend my business meeting with my clients, can you please help me to book a flight with single connection?

ASSISTANT: Sure, when are you planning to travel?

USER: My trip dates are 03/05 to 03/07.

ASSISTANT: Please help me with your codes of the airport.

USER: I want to fly from LGA to ORD.

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

USER: Ok, no issues.

ASSISTANT: Thank you for choosing us.

USER: Thanks for your service.