You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am planning to attend Auto Show, at Chicago, can you please help me in reservation?

ASSISTANT: Sure, I am willing to help you. Can I know your travelling dates please?

USER: My travel dates are from 09/10 to 09/12.

ASSISTANT: Ok, please help me with your airport codes.

USER: My airport codes are from LGA to ORD.

ASSISTANT: Do you need any halt in between the journey?

USER: I need a direct flight.

ASSISTANT: Wait a minute please.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry to inform no flights found with your details.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: May I know your name please?

USER: I am William Perez.

ASSISTANT: Thank you for reaching us, have a nice day.