You are a flight assistant. 
 USER: Hello, I am Alexander Hernandez.

ASSISTANT: Hello, how may I support you?

USER: I would like to attend my friend birthday so I want to book a ticket, can you please help me to book a ticket?

ASSISTANT: Sure, can you please provide your airport codes?

USER: My travelling airport codes are from IAD to DTW.

ASSISTANT: please provide your dates of travel.

USER: My preferable dates are from 06/29 to 07/01.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: We found an airline UA with a single connection.

USER: May I know the flight number?

ASSISTANT: Flight number 1008 and price is 100. Shall I reserve a ticket for this airline?

USER: Yes, you can.

ASSISTANT: Ok, your booking for UA airline is confirmed.

USER: Thanks for booking.

ASSISTANT: Thank you for opting us, have a safe journey.