You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: Can you please help me in booking my flight from PHX to reach OAK, as I having a meeting there?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My travelling dates are Aug 11th and Aug 13th.

ASSISTANT: Are you looking for a connecting flight or direct flight?

USER: I am looking for a flight that has maximum of a single connection.

ASSISTANT: Do you have any class preferences?

USER: I am comfortable in any class. So, you can search for either any one of the classes.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: I don't have any more requirements.

ASSISTANT: Can you please provide your name to proceed further?

USER: My name is Carol Campbell.

ASSISTANT: Sorry, there are no flights available at your request.

USER: Ok, not a problem. Anyways, thank you for the information.

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