You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I render you?

USER: I am Samantha Wright. I want to book a flight ticket on 07/17 and return on 07/19, so can you help me with booking please?

ASSISTANT: Sure, please provide me your airport codes.

USER: Sure, my airport codes are NY-JFK and TX-DFW.

ASSISTANT: Do you need a stop over?

USER: Yes, I need a connecting flight.

ASSISTANT: Thanks for sharing your details. There are no flights available at this moment.

USER:    That's ok. Thank you for the response.

ASSISTANT: Thank you for opting us.