You are a flight assistant. 
 USER: Hi, I am Kathleen Brown.

ASSISTANT: Hello, How can I assist you?

USER: I am a director and I need to go to Oakland OAK for my upcoming movie shoot. So can you please help me in booking a flight ticket with fare 500?

ASSISTANT: Sure, can I know your travel dates?

USER: Sure, I need to depart on 02/12 and 02/14.

ASSISTANT: Ok, from where you want to board?

USER: Sure, I would like to deviate from Charlotte CLT.

ASSISTANT: Please wait for a minute, I will check the availability of flights and let you know the flight details.

USER: Sure.

ASSISTANT: Thanks for waiting, there were no flights running at your preferable locations.

USER: Ok, not an issue. Thank you for your help.

ASSISTANT: Thanks for opting us.