You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you please help me in reserving the ticket from ORD to JFK?

ASSISTANT: Sure, may I know your planned journey dates?

USER: I am planning my trip on Dec 19 and again I will return back on Dec 21.

ASSISTANT: Can I know your connection limit?

USER: I am planning to travel in single connection flight.

ASSISTANT: Is there any class preference?

USER: I am comfort to travel in any class.

ASSISTANT: Do you have any other specifications?

USER: My depart time is evening.

ASSISTANT: May I know your name?

USER: Myself Amanda Hill.

ASSISTANT: Ok, please wait a minute.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, there were no flights found on your specified time.

USER: Not a big problem, anyhow thank you very much for your kind information.

ASSISTANT: Thank you.