You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Donald Moore here.

ASSISTANT: How may I help you?

USER: My airport codes for boarding the flight are LAX to LAX. Can you reserve a flight ticket?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My preferable dates for travel are 09/11 to 09/13.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: There is a flight 1020 of AA airlines, shall I proceed?

USER: I am ok with the airlines. You can book it.

ASSISTANT: Ok, your booking is done.

USER: Thank you.

ASSISTANT: Welcome.