You are a flight assistant. 
 USER: Hi, I am Dorothy Wilson.

ASSISTANT: Hello, how may I help you today?

USER: I want to attend San Francisco to attend my second cousin's birthday party. Can you help me with the process of booking?

ASSISTANT: Sure, can  I have your price limit and connection?

USER: I need a flight with the price of 5000.

ASSISTANT: Could you please provides your travelling dates and airport codes?

USER: I want to fly from HOU to SFO. I need a single connection between source and destination.

ASSISTANT: May I know your travelling dates to proceed further?

USER: I want to leave on 04/26 and return on 04/28.

ASSISTANT: Ok, please wait for a moment, let me search a flight for you.

USER: OK.

ASSISTANT: Thanks for waiting, sorry, unfortunately no flights found on that day.

USER: Ok, no issues. Thanks for your kind service.

ASSISTANT: Most welcome, thanks for reaching us.