You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Myself Robert Baker from Washington. Can you please book a flight ticket from IAD to LGA?

ASSISTANT: Ok, may I know your travelling dates?

USER: I want to take off on 09/07 and please confirm my return ticket also on 09/09.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Sorry, no flights found on your route to reserve your ticket.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you for reaching us.

USER: Most welcome.