You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Sarah White, want to travel to Dallas & Fort Worth, DFW to meet my cousin on her birthday. Can you please book a flight ticket for me?

ASSISTANT: Sure, I will help you. May I know your travel dates?

USER: I am willing to travel on 12/09 to 12/11.

ASSISTANT: Can you please provide me your airport codes?

USER: As my nearest airport is New York, JFK, I want to board from here.

ASSISTANT: There is no flight on your details.

USER: It's ok, no problem.

ASSISTANT: Thanks for choosing us.

USER: Thank you for your kind information.

ASSISTANT: Have a good day.