You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I have a live music concert at Dallas, please help me in booking a ticket from PHX to DFW.

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

USER: My planned travel dates are on Feb 25 and Feb 27.

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

USER: I need a flight with single connection.

ASSISTANT: May I know your name for the documentation process?

USER: My name is Samantha Allen.

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

USER: I prefer normal-cost airline.

ASSISTANT: Sorry, we regret to inform you that there is no flight available as per your request.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Welcome, thank you for reaching us.