You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Linda Taylor.

ASSISTANT: How can I aid you today?

USER: I would like to book a flight ticket from DEN to PHX to meet my  brother.

ASSISTANT: Sure, I will help you with that. Can you please mention your preferable travel dates?

USER: Sure, I intend to travel on dates 12/27 and 12/29.

ASSISTANT: Are you okay with connecting flight or you need any direct flight?

USER: I need a connecting flight.

ASSISTANT: Do you need any specific depart and arrival time for this trip?

USER: I want to return in the afternoon.

ASSISTANT: Do you have any another specifications?

USER: No, I do not have any other specifications.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for reaching us.