You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: George Evans here.

ASSISTANT: How can I assist you?

USER: I would like to attend a business meeting in Los Angels, can you please help me out with booking of a flight ticket to go there?

ASSISTANT: Please may I know your travel dates to check for the flights availability?

USER: Sure, I am planning to leave my location on 07/14 and please book my return ticket also on 07/16.

ASSISTANT: Ok, please may I know the airport codes of your origin and destination location you prefer, so I can book?

USER: I will prefer DEN and LAX as my origin and destination airports respectively.

ASSISTANT: Sorry, there are no flights available for you to make the journey as per your requirements.

USER: Oh! Sad to hear that. Anyway, I will find another alternative to go there. Thank you for the information.

ASSISTANT: Thank you for connecting with our agency.