You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you today?

USER: I am Cynthia Evans. I would like to book a flight ticket from OAK to JFK, will you please aid me in making an airline reservation?

ASSISTANT: Sure, can you mention your travel dates?

USER: My travel dates are Apr 2nd and Apr 4th.

ASSISTANT: Is there any airline preference do you have?

USER: I will prefer to travel with any airline.

ASSISTANT: Do you need a flag stop in between your journey?

USER: Yes, I need a flag stop.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Do you have any specifications?

USER: No, I don't have any other specifications.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for connecting with us.