You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Can you please help me to book a flight ticket from ORD to SEA?

ASSISTANT: Sure, may I know your scheduled travel dates?

USER: My planned travel dates are Feb 12 and Feb 14.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: May I know your connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any other preferences?

USER: No, other preferences.

ASSISTANT: May I know your name?

USER: Myself John Clark.

ASSISTANT: Ok, please wait for a minute.

USER: Sure, I will wait.

ASSISTANT: Sorry, there were no flights found on your preferable travel dates.

USER: That's fine, no issue. Anyway thank you for checking.

ASSISTANT: Thank you for approaching us.