You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to travel from ORD to EWR. Can you book a flight ticket for me?

ASSISTANT: Sure, when do you want to travel?

USER: I want to fly in the flight on Aug 14 and Aug 16.

ASSISTANT: Ok, Do you have any class preferences?

USER: No.

ASSISTANT: Ok, Kindly mention your connection limit.

USER: I don't have any.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Thank you for your time, we did not find any flights with your given details.

USER: That's ok. Anyways, thank you.

ASSISTANT: Ok, May I know your name?

USER: Thomas Nelson.

ASSISTANT: Ok, Thank you for choosing us.