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 IAH to meet my friends. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, can you please share your travelling dates?

USER: My travelling dates are Mar 21 and Mar 23.

ASSISTANT: Ok, do you have any other specifications?

USER: Yes, I prefer to travel in a connecting flight.

ASSISTANT: May I know your name please?

USER: I am Elizabeth Green.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Thank you for your time, sorry no flights found with your details.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for reaching us, have a nice day.