You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you now?

USER: I want to book a ticket from ORD to JFK. Could you book a ticket?

ASSISTANT: Ok, may I know your planned dates for this journey?

USER: Departure is on Mar, 14 and return date is Mar, 16.

ASSISTANT: Do you need a connecting flight or a direct flight?

USER: I would be comfortable with single stop over.

ASSISTANT: May I know your good name?

USER: My name is Robert King.

ASSISTANT: I am sorry to say, there are no flights available for your journey.

USER: Thank you.

ASSISTANT: Thank you for helping me with booking. Thank you for reaching us.