You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I assist you now?

USER: I'm Melissa Clark.

ASSISTANT: Thanks for providing your name.

USER: Please book a ticket from Phoenix, AZ-PHX to Oakland, CA-OAK, for arts and crafts festival.

ASSISTANT: Sure, do you need any halt in between journey?

USER: Flight connections limit is 1.

ASSISTANT: Can you please share me your travelling dates?

USER: 01/19 is departure date and return is by 01/21.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry to say that there is no flight available on your requested dates.

USER: Thanks for the assistance.

ASSISTANT: Thanks for choosing us.