You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: Eric Gonzalez here. Can you please help me to book a flight ticket from CLT to PHX?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I am planning to travel in the month of Sept from 11th to 13th.

ASSISTANT: Do you have any limits on number of connections?

USER: I prefer to travel with a direct flight.

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

USER: I want to return in the afternoon.

ASSISTANT: Do you have any another specifications on your journey?

USER: No, thanks for asking.

ASSISTANT: Sorry, there are no flights available as per your specifications.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Welcome, thank you for reaching us.