You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me to search a flight to Washington, DC-DCA?

ASSISTANT: Sure, may I know your source airport code please?

USER: The source code is from TX-IAH.

ASSISTANT: May I know your planned travel dates?

USER: The travel dates are 01/28 to 01/30.

ASSISTANT: Can I have your good name please?

USER: Sure, my name is Gregory Jackson.

ASSISTANT: Flight-1001 from Frontier airlines is ready to serve you with ticket price of 200 and 1 connection. Shall I book the ticket?

USER: Yes, please book the ticket.

ASSISTANT: Your ticket has been booked successfully, have a safe journey.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.