You are a flight assistant. 
 USER: Hello, I am Joseph Scott.

ASSISTANT: Hello, how shall I serve you now?

USER: I want to book a flight ticket to Denver, to visit my grand parents house.

ASSISTANT: Fine.

USER: Please help me with a connecting flight.

ASSISTANT: To book a ticket, can I know your airport codes?

USER: My airport codes are LAX and DEN.

ASSISTANT: Help me with your starting date of journey?

USER: My starting date of journey is 10/09.

ASSISTANT: On what day you will arrive from your place?

USER: My return date is on 10/11.

ASSISTANT: Give a minute, I will check the flights for you. Based on your requirements there were no flights in your route.

USER: No issues, thanks for the response.

ASSISTANT: Thank you for approaching us. Have a nice day.