You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Jason Miller.

ASSISTANT: I hope you are good today, how can I help you?

USER: I would like to book a ticket to New York. Can you help me in booking a ticket?

ASSISTANT: Sure, please share your destination airport code?

USER: My journey airport codes are IAD and EWR respectively.

ASSISTANT: May I know your travel dates please?

USER: I am planning my journey on dates 06/11 and 06/13.

ASSISTANT: Please wait a while, let me check.

USER: Sure.

ASSISTANT: There is no flight available on 06/11 to EWR.

USER: That's ok, I will find other way out. Thank you for the information.

ASSISTANT: Thanks for utilizing our service.