You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Can you please help me in booking my flight ticket from DCA to PHX?

ASSISTANT: Sure, please share me your travelling dates.

USER: My travelling dates are Feb 28 and Mar 01.

ASSISTANT: Can I know your airline preference?

USER: I am searching for normal - cost airline.

ASSISTANT: Do you need any connection limit?

USER: I want connecting flight.

ASSISTANT: May I know your depart and arrival time?

USER: No, thanks for asking.

ASSISTANT: If you have any other specifications let me know?

USER: I prefer economy class ticket.

ASSISTANT: Please give your good name for reservation.

USER: Myself Samantha Jackson.

ASSISTANT: Ok, please wait.

USER: Ok, I will wait.

ASSISTANT: There are no available flights on your required dates.

USER: Ok, thanks for your information.

ASSISTANT: Thank you for choosing us.