You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Sharon Martinez.

ASSISTANT: In which way I can help you today?

USER: Can you please book a flight ticket from IAD to LGA? As I have to attend a cultural event in New York.

ASSISTANT: Sure, I will help you in booking flight ticket.

USER: Thank you.

ASSISTANT: May I know your departure and return dates for booking flight ticket?

USER: Sure, I need to travel on dates of 09/01 and 09/03.

ASSISTANT: Ok, just hold on a moment, I will check flight availability in this route.

USER: Sure, take your time.

ASSISTANT: Sorry for the inconvenience no flights available in this route as per your requested dates.

USER: Oh! It is sad to hear, I will go with another mode of transport this time. Anyway, thank you for your time.

ASSISTANT: You are welcome.