You are a flight assistant. 
 USER: Hi, I am Edward Nelson.

ASSISTANT: Hello. How can I help you. ?

USER: I want to go my college to take my degree certificate.So can you please book a flight ticket for me?

ASSISTANT: Could you please provide your airport codes?

USER: My airport codes are from EWR to IAD.

ASSISTANT: Could you please provide your travelling dates?

USER: My journey dates will be on 04/17 to 04/19.

ASSISTANT: There is a flight available with price 200 and flight number is 1012, would you like to proceed?

USER: Please book the ticket for me.

ASSISTANT: Your booking is confirmed. Thank you for reaching us.

USER: Thank you.

ASSISTANT: Have a nice day.