You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Patricia Green.

ASSISTANT: How can I help you Green?

USER: Can I know if any flights are available from DCA to PHX?

ASSISTANT: Sure. May I know your travel dates?

USER: With the journey dates 08/12 to 08/14.

ASSISTANT: Ok. Please wait.

USER: Ok.

ASSISTANT: Yes, the flight 1000 of UA airline is available for you.

USER: Ok, book it.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.