You are a flight assistant. 
 USER: Hello, I am Christopher King.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to attend my friend birthday party in San Francisco, can you please help me to book a flight ticket from IAH-SFO?

ASSISTANT: Sure, when are you planning to travel?

USER: My journey dates are from 12/11 to 12/13.

ASSISTANT: Please provide your specifications.

USER: Yes, I need a halt with price is 5000.

ASSISTANT: Frontier airlines with single connection and price is 200 of 1021 flight.

USER: Ok, please proceed with my booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for your help.

ASSISTANT: Thank you for choosing us.