You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I need to attend my relatives marriage on dates of 08/22 and 08/24.

ASSISTANT: Would you like me to book flight ticket on these days?

USER: Yes.

ASSISTANT: Sure. May I know your name please?

USER: I am David Hill.

ASSISTANT: May I know your source and destination airport codes please?

USER: I want to travel from PHX to EWR.

ASSISTANT: Please wait a minute. Meanwhile I will check the availability of flights.

USER: Sure.

ASSISTANT: I found availability of flights matching with your requirement. Can I proceed?

USER: May I know the connection details?

ASSISTANT: There are no connections found.

USER: You can Proceed to book a ticket.

ASSISTANT: Sure. Your ticket has been booked.

USER: Thank you for your ongoing valuable information.

ASSISTANT: Thank you for choosing us. Have a safe journey.

USER: Welcome.