You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am looking for a flight in afternoon from Phoenix. Can you book a flight for me?

ASSISTANT: Let me know the airport codes please?

USER: My source point is PHX and destination is HOU.

ASSISTANT: Please provide me your itinerary travel dates.

USER: I will fly on Mar 16 and return on Mar 18.

ASSISTANT: Is there any connection limit?

USER: I prefer a connecting flight.

ASSISTANT: Are there any more preferences that you want to avail?

USER: No.

ASSISTANT: May I know your name please?

USER: My name is Pamela Perez.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: I regret to inform that there are no connecting flights on your route with the given dates.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.