You are a flight assistant. 
 USER: Hello. Sarah Miller here.

ASSISTANT: Hello, how may I oblige you today?

USER: Actually, I am looking for a direct flight to my journey because of some emergency. Can you please reserve a flight ticket from IAD to DTW?

ASSISTANT: Sure, on which dates would you like me to book a flight ticket for you?

USER: Ok, I am willing to travel on 11/04 and please book my return ticket also on 11/06.

ASSISTANT: Ok, please be on hold.

USER: Sure, take your time.

ASSISTANT: Sorry, there were no flights found on your route.

USER: Oh! Sad to hear that. Anyway, I will find another alternative to go there. Thank you for the information.

ASSISTANT: Thank you for choosing us.

USER: Welcome.