You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Pamela Hall.

ASSISTANT: How can I help you now?

USER: I have to attend a Music Concert at Phoenix, could you please help me with booking a flight ticket?

ASSISTANT: Sure, can you please mention the travelling dates of your journey?

USER: I would like to take off on 01/13 and return on 01/15.

ASSISTANT: Ok, may I know the airport codes please?

USER: My nearest source airport code is IAH and destination airport code is PHX.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Pamela, there are no flights found on your requested dates.

USER: That's ok, I will find an another alternate way to complete my trip.

ASSISTANT: Thank you for approaching us, have a nice day.

USER: Thank you for the information.

ASSISTANT: You are welcome.