You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to book a flight ticket from HOU to OAK, can you please help me?

ASSISTANT: Sure, let me know your travel dates please?

USER: Sure, my planned travel dates are Nov 15 and Nov 17.

ASSISTANT: May I know your connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Ok, is there any class preference?

USER: No, other preferences.

ASSISTANT: Can I know your name please?

USER: Myself Samantha Lee.

ASSISTANT: Sorry to inform you that there are no flight services available on your given dates.

USER: No issue, anyway thank you for checking.

ASSISTANT: Thanks for contacting us.