You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Nicole Baker.

ASSISTANT: What type of service do you need from our ticket booking agency?

USER: Can you please help me in flight ticket booking from DCA to PHX to attend a meeting?

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

USER: Thank you.

ASSISTANT: Can you please provide me your planned travel dates?

USER: I have planned my dates on 08/23 and back on 08/25.

ASSISTANT: Ok, please hold on for a minute.

USER: Sure and find the flight with one stop and go in my trip.

ASSISTANT: Sorry to inform you, there are no flights available in this route and on the dates you have provided to me.

USER: Ok, no problem with that one. Thank you for your service.

ASSISTANT: You are most welcome. Thank you for choosing our ticket booking agency.

USER: Welcome.