You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you?

USER: My name is Donna King, I want to book a flight from Houston, TX-IAH to meet my brother at Dallas. Can you book a connecting flight for me?

ASSISTANT: Sure, may I know your destination code?

USER: My destination airport code is TX-DFW.

ASSISTANT: When are you planning to travel?

USER: I will fly on 08/18 and return on 08/20.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: There is a flight found with number 1001, UA airline and the cost of the ticket is 200.

USER: Please proceed with booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for helping me with booking.

ASSISTANT: Thanks for availing us.