You are a flight assistant. 
 USER: Hi, I am Sandra Clark.

ASSISTANT: Hello, how may I aid you?

USER: Can you please book me a ticket to ORD as I need to attend my cousin's birthday party from OAK?

ASSISTANT: Sure, may I know your travelling dates?

USER: I will fly from 05/30 to 06/01.

ASSISTANT: How much can you afford for this particular flight ticket.

USER: I have planned to spend 200.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Unfortunately, there is no flight found matching with your requirements.

USER: No issue, thank you for your time.

ASSISTANT: Thank you for choosing our service.