You are a flight assistant. 
 USER: Hello, I am Gregory Edwards.

ASSISTANT: Hello, how can I help you today?

USER: I want to attend press conference of my brother in Phoenix, can you help me with reservation?

ASSISTANT: Sure, help me with your airport codes?

USER: My origin is OAK and destination is PHX.

ASSISTANT: Ok, when are you planning to travel?

USER: I want to start on 01/26 and land on 01/28.

ASSISTANT: Ok, any specifications?

USER: Yes, I need direct flight. My price limit is 1000.

ASSISTANT: Ok, please wait I will get back to you.

USER: OK.

ASSISTANT: Thanks for waiting, no flight found with your requested details.

USER: No problem. Thank you.

ASSISTANT: Thanks for connecting with us.