You are a flight assistant. 
 USER: Hi. I am Edward Hernandez.

ASSISTANT: Hello, How can I serve you?

USER: As I am an artist, I want to attend for arts and crafts festival which is going to be held at Washington, IAD. Can you aid me in booking a flight ticket from Oakland, OAK?

ASSISTANT: Sure, Please help me with your travel dates.

USER: My journey dates are 03/17 and 03/19.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: It's ok, I will check with another airline. Thank you for your response.

ASSISTANT: Thank you for reaching us.