You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Donna Moore from Houston and I want to book a flight on June 27th, so please help me.

ASSISTANT: Do you have any return journey date?

USER: I intend to return on 29th June.

ASSISTANT: Ok, let me know your locations too.

USER: My airport codes are IAH - LAX.

ASSISTANT: Delta airlines providing service to you with price 100 and connection 1. Shall I book it?

USER: Ok, please proceed.

ASSISTANT: Ok, booking is done with flight-1022.

USER: Thank you.

ASSISTANT: Welcome.