You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: I am Deborah Phillips. I have planned to visit my old school at Oakland, can you please help me to book a ticket?

ASSISTANT: Sure, I am happy to help you.

USER: Thank you.

ASSISTANT: Could you please share your boarding and landing points?

USER: My airport codes are from PHL to OAK.

ASSISTANT: May I know your itinerary dates?

USER: My itinerary dates are from 01/11 to 01/13.

ASSISTANT: How much you can afford for this journey?

USER: I can afford up to 1000.

ASSISTANT: Please, wait.

USER: Ok, I will wait for your response.

ASSISTANT: Thank you for being patience, there are no flights found on your given requirements.

USER: Ok, that's not a problem.

ASSISTANT: Thank you for choosing us.

USER: Thank you so much for your kind help.