You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Sarah Collins. I want to attend for my niece's marriage in Seattle, can you help me in booking a flight ticket from Houston?

ASSISTANT: Sure, we are here to help you. May I know your depart and arrival dates?

USER: My departure day is 09/21, return day is 09/23.

ASSISTANT: Please, share your fare limit.

USER: My price limit is 500.

ASSISTANT: Kindly, mention the airport code of Houston.

USER: My source airport code is TX - HOU.

ASSISTANT: Would you prefer either business class or economy class?

USER: I am comfortable with any class.

ASSISTANT: Please, share the airport code of Seattle.

USER: Seattle airport code is WA - SEA.

ASSISTANT: Kindly, mention your connection limit.

USER: I need a halt.

ASSISTANT: Thank you for sharing your journey details. Please, hold on.

USER: Sure.

ASSISTANT: Thank you for your valuable time. you have a direct flight in Southwest airline. Flight number is 1013 and price is 100.

USER: Ok, you can proceed to booking.

ASSISTANT: Your reservation is done.

USER: Thank you.

ASSISTANT: Thank you for reaching us, have a safe journey.