You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I guide you?

USER: I'm Brandon Martinez.

ASSISTANT: Nice to meet you, Martinez.

USER: I planning to meet my sister In OAK, can you please help me to book my ticket from PHL to OAK?

ASSISTANT: Could you please mention your dates of travel?

USER: My travelling dates are 12/12 and 12/14. Make sure that connection limit should be 1. My price limit is 500 for booking my ticket.

ASSISTANT: Sorry Martinez, there is no flight is available for you.

USER: Ok, fine.

ASSISTANT: Thank you for your information.

USER: I will find any other way to meet my sister. Thank you for your help.

ASSISTANT: You are welcome.