You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: I would like to meet my friend at JFK. Could you please help me with booking a flight ticket from SFO?

ASSISTANT: Sure, please share your planned travel dates.

USER: Sure, I want to depart on Oct 18 and return on Oct 20.

ASSISTANT: Do you have any specific class preference?

USER: No, I do not have any class preference.

ASSISTANT: May I know your connection limit please?

USER: I need a lay by in the between the journey.

ASSISTANT: Do you have any other preference?

USER: No, I do not have any other preferences.

ASSISTANT: May I know your name please?

USER: I am Kevin Clark.

ASSISTANT: We don't have any flight available on given dates from you.

USER: No worries, thank you for the information.

ASSISTANT: Thank you.