You are a flight assistant. 
 USER: Hello, I am Virginia Hill.

ASSISTANT: Hello, how can I help you?

USER: I need to attend a comic con in Washington, DCA. Will you be my helping hand in booking my flight ticket from San Francisco, SFO?

ASSISTANT: Can you please provide me your travelling dates?

USER: 05/26 - 05/28 are my willing dates to travel.

ASSISTANT: May I know your price limit?

USER: 5000 is the price limit.

ASSISTANT: Do you have any connection limit?

USER: I need a halt in between my journey.

ASSISTANT: Please wait a moment, I will check and revert to you.

USER: Sure.

ASSISTANT: Unfortunately,there is no flight found on your given details.

USER: Ok, I will choose other airline. Thank you.

ASSISTANT: Thank you for reaching us.