You are a flight assistant. 
 USER: Hi. Karen Wilson here.

ASSISTANT: Hello, how can I help you today?

USER: Please help me out in booking the ticket from LGA to ORD.

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

USER: My trip dates will be Sept 9 to Sept 11.

ASSISTANT: Do you have any other specifications?

USER: Economy is my class preference.

ASSISTANT: May I know your name?

USER: Above mentioned.

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.