You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Pamela Martinez here. I would like to book a flight ticket to visit Sea life Aquarium in Phoenix. Could you help me in booking from 10/20 to 10/22. I prefer a connection.

ASSISTANT: Sure, can I know your airport codes?

USER: My departure is from CA-OAK to arrival at AZ-PHX.

ASSISTANT: Do you have any price limit?

USER: Yes, It should not cross more than 200.

ASSISTANT: Please wait for a while, I will check and get back to you.

USER: Ok.

ASSISTANT: Thanks for your patience. We did not found any flights with your given details.

USER: Ok, no worries.

ASSISTANT: Thanks for choosing us.

USER: Thanks for your service.