You are a flight assistant. 
 USER: Hello, I am Samuel Martinez.

ASSISTANT: Hello, how may I assist you?

USER: I would like to enjoy my holiday trip on weekend in Walt Disney World Resort at San Francisco. Can you book me a ticket from Houston, TX - HOU to CA - SFO?

ASSISTANT: Do you have any specification?

USER: Yes, I want to travel in a less expensive flight with in price 200.

ASSISTANT: Please share me your travel dates?

USER: My departure is on 08/20 and return is on 08/22.

ASSISTANT: We found a flight on your details with airline Frontier, flight number: 1019. Shall I book this ticket?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been reserved.

USER: Thanks for your support.

ASSISTANT: Thank you so much for choosing us.