You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: Need your assistance in booking a ticket from Houston, to reach Los Angeles within fare 5000? Can you serve me in this?

ASSISTANT: Sure, we provide our full service to you in booking a flight ticket.

USER: Thank you.

ASSISTANT: Can you please mention your travelling dates?

USER:  My scheduled dates are from 06/25 to 06/27.

ASSISTANT: May I know your source and destination airport codes?

USER:  TX - HOU, is my source airport and destination is Los Angeles, CA - LAX.

ASSISTANT: To proceed further, I need your name please.

USER: Christopher Davis, is my name.

ASSISTANT: Thanks for giving details, we found a Connecting flight in UA airlines with a fare of 100. The flight number is 1021.

USER: I am comfortable with that flight, you may now proceed for booking.

ASSISTANT: Your booking has been confirmed in UA flight.

USER: Thanks for your kind help. I am really happy with your response.

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