You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jeffrey Roberts.

ASSISTANT: How may I assist you?

USER: I am planning to going for Navajo adventures at Phoenix, AZ-PHX. So can you please help me in booking a flight ticket from Oakland, CA-OAK?

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates are from 12/11 to 12/13.

ASSISTANT: How much you can afford for this ticket?

USER: I can afford up to 200 from budget.

ASSISTANT: Sorry there is no flight on your details.

USER: Ok, no problem.

ASSISTANT: Thank you so much.

USER: Thanks for your information.