You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help- you at this moment?

USER: George Jackson here. I need your help in booking of a flight ticket from SEA to CLT for an important business meeting, can you please help me out with booking of a flight ticket on those locations?

ASSISTANT: Sure, I will help you. Can I have your journey dates please?

USER: Sure, I am planning to leave on 04/28 and please book my return ticket on 04/30.

ASSISTANT: Can I have a moment please? I will check the flight availability and get back to you.

USER: Ok, take your time.

ASSISTANT: Sorry George, there is mno flight available on your required dates.

USER: Oh! Sad to hear that.

ASSISTANT: You are welcome. Thank you for reaching us, have a nice day.