You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be your helping hand today?

USER: Please book a flight ticket to reach my destination ORD to meet my cousin.

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Let me know your planned dates.

USER: My planned journey dates are Sept 16 and 18.

ASSISTANT: Ok, Is there any connection limit?

USER: I prefer to travel in a connected flight.

ASSISTANT: From which airport, you would like to start?

USER: I am boarding from LGA.

ASSISTANT: In which airline, you prefer to go?

USER: I prefer to fly in a Big Brand Airlines.

ASSISTANT: Ok, Can I have your name please?

USER: Sure, Samuel Mitchell is my name.

ASSISTANT: Ok, please standby.

USER: Sure.

ASSISTANT: Thank you for waiting, no flights were found based on your information.

USER: That's Ok, thanks for your response.

ASSISTANT: Thank you for choosing us.