You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Elizabeth Gonzalez.

ASSISTANT: How may I assist you today?

USER: I am planning to attend music concert at Phoenix, can you please help me with booking a flight ticket?

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable dates of travelling?

USER: Sure, I would like to take off on 10/15 and return back on 10/17.

ASSISTANT: Ok, may I know your origin and destination airport codes for booking?

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

ASSISTANT: Ok, please wait a moment to check the flights.

USER: Ok, but please make sure that the connection limit is 1.

ASSISTANT: Sorry to inform you that, there are no flights available in your route with your requested dates of travelling.

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

ASSISTANT: Thank you for reaching us, have a great day.

USER: You are welcome.