You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: Myself Elizabeth Smith. I need your help in booking my flight ticket from PHX to DTW. Can you please help me?

ASSISTANT: Sure, I am glad to help you with that.

USER: Thank you.

ASSISTANT: Can you please provide your planned dates of travelling?

USER: Sure, I will take-off on 01/15 and return back on 01/17.

ASSISTANT: Please wait a moment to check the flights on your route.

USER: Sure.

ASSISTANT: We regret to inform you that there are no flights moving to your region with your planned dates of travelling.

USER: Sad to hear that. Anyway, I will find an other way to reach my destination. Thank you for checking.

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