You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I address you?

USER: I am Sarah Miller. I would like to make a trip to Houston, TX - IAH. Can you please help me to book a flight from San Francisco, CA - SFO?

ASSISTANT: Sure, may I know when are you planning to travel?

USER: I need to fly on 05/19.

ASSISTANT: Do you need a lay by?

USER: Yes, I need a break.

ASSISTANT: When would you like to return?

USER: I would like to return on 05/21.

ASSISTANT: Frontier airline with flight number 1000 is going on your way and the fare is 100. Is that okay?

USER: Ok, please proceed with the booking.

ASSISTANT: Your booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for opting us.