You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am planning for holiday vacation from TX-IAH to CA-SFO.Can you please help me out?

ASSISTANT: Can you provide your travel dates? Give me a minute, let me check the details.

USER: The travel dates are from 06/20 to 06/22. Ok.

ASSISTANT: The flight 1029 of UA airlines is available on your requested dates. Shall I book the ticket?

USER: May I know the price?

ASSISTANT: The price is 200.

USER: Ok, please book the ticket.

ASSISTANT: May I know your name?

USER: Sure, my name is Samuel Anderson.

ASSISTANT: Your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Welcome.