You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Myself Patrick Clark. Can you please book a flight ticket booking from EWR to DTW?

ASSISTANT: Sure, I will help you out.

USER: Thank you.

ASSISTANT: May I know your travelling dates please?

USER: Sue, I would like to travel on dates of 06/21 and 06/23.

ASSISTANT: Ok, please wait a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, there are no flights found.

USER: Oh! It is sad to hear, anyway I will go with another agency this time.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your time.