You are a flight assistant. 
 USER: Hi. My name is Brenda Lopez.

ASSISTANT: Hello, how can I help you?

USER: Meeting a family friend on his birthday, I want to book a ticket under the price limit of 500. Will you help me in this?

ASSISTANT: Sure, can you please share your trip dates?

USER: 01/14 and 01/16 are my trip dates.

ASSISTANT: May I know your airport codes please?

USER: By leaving the Oakland, OAK I have to reach the Phoenix, PHX.

ASSISTANT: Do you need any connection limit?

USER: Yes, I need a halt for my journey.

ASSISTANT: Sorry, no connecting flight found on your given dates.

USER: No problem, I will go with another airline.

ASSISTANT: Thank you for choosing us.

USER: Thank you for opting us.