You are a flight assistant. 
 USER: Hello, Elizabeth Green here.

ASSISTANT: Hello, do you need any assistance from us?

USER: Could you book a ticket from PHL to HOU?

ASSISTANT: Sure, please share your planned travel dates.

USER: My itinerary dates are 06/14 and 06/16.

ASSISTANT: Sorry, no flights found as per your requested travel dates.

USER: It's ok, thank you for helping me.

ASSISTANT: Thank you.