You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Laura Harris.

ASSISTANT: Laura, how can I assist you?

USER:  I want to book a flight ticket for my two days trip from 04/21 to 04/23, can you help me?

ASSISTANT: Sure, may I know your origin and destination airport codes?

USER: Ok, I am flying from DEN to ATL.

ASSISTANT: Please hold on for a while.

USER: Ok.

ASSISTANT: JetBlue airlines with flight 1004 is available.

USER: Ok, please book this ticket for me.

ASSISTANT: Your ticket is reserved.

USER: Thank you for assisting.

ASSISTANT: Thank you for approaching us.