You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I want to book a flight ticket from Phoenix, AZ-PHX to NV-LAS to attend for an interview, can you check with the availability of the flight on this route?

ASSISTANT: Sure, may I know your price limit please?

USER: The ticket should be under 5000.

ASSISTANT: Can you please provide your journey dates to proceed further?

USER: My travelling dates are from 03/11 to 03/13.

ASSISTANT: Ok, may I know your name please?

USER: I am Catherine Mitchell.

ASSISTANT: Thank you, sorry to say no flight found with your details.

USER: Ok, thanks for your response.

ASSISTANT: Have a nice day.