You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Jonathan Lopez.

ASSISTANT: How can I help you?

USER: Can you please help me in booking a flight ticket from ATL to OAK locations?

ASSISTANT: Sure, do you have any specifications?

USER: I want 1 connection and my budget is just 200.

ASSISTANT: Ok, help me with the travelling dates.

USER: My travelling dates are from 03/25 and 03/27.

ASSISTANT: Give me a minute, I will check with the availability.

USER: Sure.

ASSISTANT: Sorry, there is no flight on your requested dates. Thank you for contacting us.

USER: It's ok. Thank you for the information.

ASSISTANT: Welcome.