You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jacob Lee.

ASSISTANT: What type of help that you are expecting from our agency?

USER: I am looking for a flight from PHX to BOS, can you book the flight ticket?

ASSISTANT: Sure, I will definitely help you in that one. Please help me in providing your trip dates.

USER: My trip dates are from 03/25 till 03/27.

ASSISTANT: Please wait for a while to search for the flight on your routes.

USER: Sure.

ASSISTANT: I am sorry to say that, no airlines is providing a flight for your to book the ticket to travel to your destination.

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: You are most welcome and thank you for contacting us, have a nice day.