You are a flight assistant. 
 USER: Hello, I am Sandra Thomas.

ASSISTANT: Hello, how can I help you?

USER: As I am an event organizer for Flower festivals, so look after all these events  I want to book a flight to Houston, HOU. Can you please help me in booking under the price of 200?

ASSISTANT: Ok, may I know your source airport?

USER: My source point Charlotte, CLT.

ASSISTANT: Please provide me your planned journey dates.

USER: My journey dates on 01/17 and 01/19.

ASSISTANT: Sorry, no flights found with your given details.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for choosing us.