You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Shirley Campbell here.

ASSISTANT: Good morning Shirley, how can I help you at this moment?

USER: I have to attend an important meeting in Los Angels, so could you please me out with booking of a ticket?

ASSISTANT: Sure, I will help you with booking. Can I have your travel dates to find flight for you?

USER: Sure, my boarding is on 03/27 and please book a return flight ticket also on 03/29.

ASSISTANT: Ok, please provide me airport codes of your journey locations.

USER: Sure, I want to travel from IAD to LAX.

ASSISTANT: Ok, please give me a moment let me check for flight availability.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for waiting.

USER: No problem.

ASSISTANT: happy to inform you that AA airlines is providing a flight in your route with connection 1. Shall I confirm it?

USER: Yes, I am ok with this, you can proceed now.

ASSISTANT: Ok Shirley, I have confirmed a ticket with flight number 1023.

USER: I will appreciate your service, thank you for your help.

ASSISTANT: My pleasure. Thank you for reaching us.

USER: Welcome.