You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: I am Patricia Gonzalez, can you help me to book a flight from OAK to EWR to visit the art park?

ASSISTANT: Sure, I am happy to help you with that. Can you please share your preferable journey dates?

USER: Ok, my travel dates are 03/20 and 03/22 respectively.

ASSISTANT: Please wait for a minute.

USER: Ok, I will wait.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for contacting us.