You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to travel form LAS to DEN, help me in booking a flight?

ASSISTANT: Sure, we are here to help you. Can you share me your travelling dates?

USER: My travelling dates are Aug 18 to 20.

ASSISTANT: May I know your name?

USER: I am Margaret Lopez.

ASSISTANT: Do you have any other specifications?

USER: I prefer to travel on connection flight.

ASSISTANT: Ok, wait for some time.

USER: Ok.

ASSISTANT: Thanks for waiting there are no flights found on your details.

USER: That's ok, thank you.

ASSISTANT: Thanks for approaching us.