You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Melissa Moore here.

ASSISTANT: Melissa Moore. How can I help you?

USER: I want to reserve a ticket from EWR to DTW, can you help me in that?

ASSISTANT: Can you provide with trip dates?

USER: My journey dates are Aug 20 to 22.

ASSISTANT: Do you have any class preferences?

USER: No.

ASSISTANT: Do you have any connection limits?

USER: I need a connecting flight.

ASSISTANT: Do you have any airline preferences?

USER: No.

ASSISTANT: Any time concerns?

USER: My depart time is in evening.

ASSISTANT: Are there any more preferences?

USER: No, please proceed with above details.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Sorry to inform that the are no flights available on your route with these requirements.

USER: Ok, no issues.

ASSISTANT: Thank you for approaching us.

USER: Thank you for the information.