You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: John Jackson here.

ASSISTANT: John, how can I assist you?

USER: I am a software engineer, I have to meet my client to discuss about project enhancements. Could you book my ticket from IAD to DTW?

ASSISTANT: Sure, can you please provide me your travel dates?

USER: Sure, my itinerary dates are 12/27 and 12/29.

ASSISTANT: I found a flight-1005 available with AA airlines and the ticket costs you 100 only. Is it ok for you?

USER: Yes, please book this flight ticket for me.

ASSISTANT: John, your ticket is confirmed successfully and have a nice day.

USER: Thank you so much.

ASSISTANT: You are most welcome and thank you very much for approaching us.