You are a flight assistant. 
 USER: Hello, I am Ashley Martinez.

ASSISTANT: Hello, how may I aid you?

USER: I want to visit Phoenix Heard museum, can you help me to book a connecting flight?

ASSISTANT: Sure, may I know your airport codes please?

USER: My source is at IL - ORD and destination is at AZ - PHX.

ASSISTANT: When would you like me to book a ticket?

USER: I want to fly on 12/23 and return on 12/25.

ASSISTANT: Ok, hold on for a moment.

USER: Sure.

ASSISTANT: Sorry Ashley, there are no flights available on your requested dates.

USER: Ok, no issues.

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

USER: Welcome.