You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Jack Robinson.

ASSISTANT: How can I help you today?

USER: I am looking to book a flight ticket to meet my friend in Oakland. Can you help me for booking a flight ticket from PHX to OAK?

ASSISTANT: Sure, I am gleeful to help you in booking process. Can you please share your travel dates?

USER: My travelling dates are 01/16 and 01/18.

ASSISTANT: Do you have any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Which class do you prefer?

USER: I am fine with any class.

ASSISTANT: Can you please tell me your airline preference?

USER: I prefer normal cost airline.

ASSISTANT: May I know your departure time and arrival time?

USER: My departure time is morning.

ASSISTANT: Please wait a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, no flights are available on your preferable travel dates.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: Welcome.