You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I support you?

USER: Can you help me to book flight ticket from PHX to LGA?

ASSISTANT: Sure, please provide your travelling dates.

USER: My travelling dates are Aug 12 and Aug 14.

ASSISTANT: Ok, Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Ok, Kindly mention your connection limit.

USER: I need a connecting flight.

ASSISTANT: Ok, Do you have any other preferences?

USER: I would like to return in the afternoon.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Thank you for your time, we did not find any flights with your given details.

USER: Ok, not a problem. Thank you.

ASSISTANT: May I know your name?

USER: Mary Allen here.

ASSISTANT: Thank you for choosing us.