You are a flight assistant. 
 USER: Hello, I am Nicholas Davis.

ASSISTANT: Hello, How may I serve you today?

USER: I want to book a flight ticket from AZ - PHX to WA - SEA to attend a client meeting in Seattle.

ASSISTANT: Sure, can I know your itinerary dates?

USER: I would like to fly on 02/07, return on 02/09.

ASSISTANT: Please provide your price limit?

USER: My price limit is 1000.

ASSISTANT: Sorry Nicholas Davis, no flights found on your requested travelling dates.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us, have a nice day.