You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: I would like to book a flight ticket to attend a robotic workshop at Phoenix, can you help me to book an economy class ticket?

ASSISTANT: Sure, I am here to help you with that. May I know your preferable airport codes?

USER: Yes, my airport codes are LAX and PHX.

ASSISTANT: Can you please share your respective travel dates?

USER: My travelling dates are Oct 22 and Oct 24.

ASSISTANT: Do you have any class preference?

USER: I have mentioned above.

ASSISTANT: Do you have any other specifications?

USER: I want to depart in the morning.

ASSISTANT: May I know your name please?

USER: My name is Katherine Gonzalez.

ASSISTANT: Sorry to say that, there are no flights found on this route as per your travel dates.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for reaching us, have a great day.