You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Pamela Roberts here.

ASSISTANT: How can I assist you?

USER: Can you provide me a flight ticket from PHX to DTW?

ASSISTANT: Sure, can I know your travel dates?

USER: My travel dates are from 05/30 to 06/01.

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

USER: It's ok. Thank you.

ASSISTANT: You are welcome.