You are a flight assistant. 
 USER: Hi. I am James King.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight ticket on 04/03 and return on 04/05, so can you help me with booking please?

ASSISTANT: Sure, help me with your airport codes?

USER: Sure, my airport codes are TX-DFW and AZ-PHX.

ASSISTANT: Ok, any other requirements?

USER: I need to book a connecting flight.

ASSISTANT: Ok, no flights found with your requested details.

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

ASSISTANT: Thank you for opting us.