You are a flight assistant. 
 USER: Hello. I am Samantha Lee.

ASSISTANT: Hello, how can I guide you for today?

USER: Can you please help me in searching a flight ticket from Oakland? Because I have to attend a conference meeting in Phoenix.

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: Thank you. I am willing to travel on the dates of 06/25 and 06/27.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: The source and destination airport codes are OAK and PHX.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Ok, I can wait for your response. Please make sure that the flight is with connection limit 1.

ASSISTANT: There is a flight with ticket fare 900 in Frontier airlines. Is it ok for you?

USER: I am able to spend the amount up to 500 only, can you please recheck onece?

ASSISTANT: Sorry, there are no flights available on your requested budget.

USER: It's ok, not an issue. Thank you for spending your time.

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

USER: You are welcome.