You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I want to reserve my ticket from LAX to ORD, can you please help me in booking my ticket?

ASSISTANT: Sure, I am here to help you. Can you please share your travel dates?

USER: Sure, my planned dates of journey are from May, 11 to May, 13.

ASSISTANT: May I know your connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Do you have airline preference?

USER: Not required.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Ok, please share your name to proceed further.

USER: Sure, my name is Mary Harris.

ASSISTANT: Sorry, there are no flights in this route as per your travelling details.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: Thank you for choosing us.