You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Welcome to Google Booking Agency.

USER: My name is Christopher Williams.

ASSISTANT: Christopher, what kind of help are you expecting from my side?

USER: I heard that Water World in Colorado is a warm place to visit in this Winter, so I would like to travel there along with my family.

ASSISTANT: That's a great place for families in winter.

USER: As my friend suggested that your Agency is good at booking the flight ticket, so can you please assist us in booking the ticket as this is my first time?

ASSISTANT: Sure Christopher, I am here to help you. Can you provide me with the dates you are interested to travel?

USER: As there are only limited leaves grated for me, I would like to travel from 01/11 to 01/13.

ASSISTANT: Ok, can I know the source and destination airport codes?

USER: My source airport code is CLT and the destination airport code is DEN.

ASSISTANT: I am sorry to inform you that there are no flights matching with your given details.

USER: That's very sad to hear.

ASSISTANT: Would you like to reconsider?

USER: No, I will find other means of travel to visit Denver.

ASSISTANT: Thank you, have a great day ahead.

USER: Thank you for your time.