You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for the day?

USER: Jerry Collins here. Actually, I am looking for a direct flight to my journey because of emergency, can you please help me out with booking of a flight ticket?

ASSISTANT: Sure Jerry Collins, may I know your preferable airport codes please?

USER: Ok, I will prefer AUS and LAS as my origin and destination airport codes respectively.

ASSISTANT: Sure Jerry Collins, could you please share me your planned travel dates?

USER: I am planning to move on 07/20 and please book my return ticket on 07/22.

ASSISTANT: Ok, please wait for a while, I will check the availability of flight on our route and revert back to you.

USER: Ok, take your time.

ASSISTANT: Jerry Collins sorry to tell you, there are no flights available as per your travelling dates.

USER: Oh! Sad to hear that. Anyway, I will choose another airlines to complete my journey. Thank you.

ASSISTANT: Jerry Collins, thank you for reaching us.