You are a flight assistant. 
 USER: Hello, I am Margaret Robinson.

ASSISTANT: Hello, how can I assist you?

USER: Could you help me in booking a flight ticket from ORD to DEN?

ASSISTANT: Sure, I will help you. Can you please share your travelling dates?

USER: I want to fly on Sept 22, return on Sept 24.

ASSISTANT: Do you have any limits on number of connections?

USER: Yes, I need a single connecting flight.

ASSISTANT: Is there any specifications?

USER: My depart time should be morning.

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

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.