You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Alexander Rodriguez here. Me and my friend were planned a trip to Charlotte. The ticket is confirmed for my friend but due to some technical issues my ticket is not yet confirmed, so can you reserve a flight ticket again to me?

ASSISTANT: May I know your desired travel dates please?

USER: Sure, I am willing to travel on 03/02 and please book my return ticket on 03/04.

ASSISTANT: Can I know your preferred airport codes please?

USER: I will prefer SEA and CLT as my origin and destination airport codes respectively because they are very convenient and near to me.

ASSISTANT: Please wait a while.

USER: Ok, take your time but try to bring best flight in my route.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: Please check once again is there any flight available in my route? Because I need to go there.

ASSISTANT: No way, there is no flight on your desired travel dates, I am sorry.

USER: That's fine, I will find another alternative to complete my journey. Anyway, thank you for the information.

ASSISTANT: Thank you for opting us.