You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to depart in the evening. Could you please help me with booking a flight ticket?

ASSISTANT: May I know your travelling dates?

USER: My travelling dates are Jan 13 and Jan 15.

ASSISTANT: Can you please mention your travelling airport  codes?

USER: My airport codes are PHX and ATL.

ASSISTANT: Can I know your connection limit?

USER: I need a break in between the journey.

ASSISTANT: Do you have any class preference?

USER: I want to travel in a business class.

ASSISTANT: Can I have your name please?

USER: I am Donald Clark.

ASSISTANT: Sorry, no flights found on your route.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for connecting with us.