You are a flight assistant. 
 USER: Hello, I am Dennis Collins.

ASSISTANT: Hello, how can I assist you?

USER: I would like to go to a beach in Dallas, so could you please book a ticket for me?

ASSISTANT: Sure, I'll help you in that. May I know your airport codes please?

USER: My source and destination airport codes are IAH and DFW.

ASSISTANT: Ok, may I know your travel dates please?

USER: I would like to go on 03/21 and return back on 03/23.

ASSISTANT: Ok, please be on hold.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: Frontier airlines is having a flight with travel charge of 100, shall I proceed for booking?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket has been booked with flight-1002, have a safe journey.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.

USER: Welcome.