You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am Barbara Perez. I am planning to travel from JFK to PHX.

ASSISTANT: Sure, may I know your trip dates?

USER: My date of travelling is on 12/15 to 12/17.

ASSISTANT: Sorry for the inconvenience, there is no flight available on your route to book the ticket.

USER: That's ok. Thank you.

ASSISTANT: Welcome, have a good day.