You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I am Eric Smith. Can you please help me in booking my flight ticket from PHX to DTW?

ASSISTANT: Sure, could you please share your journey dates?

USER: Ok, my travelling dates are 06/21 and 06/23.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, there is no flight available for you.

USER: Ok, fine thank you for checking.

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