You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to book a flight ticket from PHX to RWR,can you please help me with that?

ASSISTANT: May I know your travel dates?

USER: Sure, my planned dates are Sept 5 and Sept 7.

ASSISTANT: Do you have any preferences?

USER: I am fine with economy class with 1 stop over in between my journey.

ASSISTANT: Do you have any other preferences?

USER: I prefer normal cost airline.

ASSISTANT: Sorry, I did not find any flights for you.

USER: That's fine, not an issue. Anyways thank you for checking.

ASSISTANT: May I know your name?

USER: Myself Carolyn Mitchell.

ASSISTANT: Thank you for reaching us.