You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: Amanda Thompson here, I need to book a flight from DCA to LAX.

ASSISTANT: Can you please share me your travelling dates?

USER: March 7 and 9 are my planned travel dates.

ASSISTANT: Please provide your specifications.

USER:  I need to have single halt in my journey.

ASSISTANT: There is a flight available with an airline Delta of flight 1016 and cost is 100. Can I proceed?

USER: Great! Please book it.

ASSISTANT: Your seat has been reserved in an economy class.

USER: Thank you for the help.

ASSISTANT: Thank you.