You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: Can you help me to book a flight ticket from DFW to JFK?

ASSISTANT: Sure, I'll help you in booking. Please share your planned travelling dates to proceed further.

USER: Please book a flight ticket for the dates Mar 15th and 17th.

ASSISTANT: Do you need a break in between your journey?

USER: Yes, I need a connecting flight for the journey.

ASSISTANT: Kindly share if you have any other comforts in between your journey.

USER: Ok, please check for a business class flight.

ASSISTANT: Ok, may I know your name please?

USER: My name is Jennifer Mitchell.

ASSISTANT: Ok, please wait a moment.

USER: Ok, I will wait.

ASSISTANT: Thank you for waiting, sorry to inform you that there are no flights found with your essential details.

USER: That is ok, anyways thank you for the assistance.

ASSISTANT: Thank you for approaching us.