You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I need to book a flight ticket from IAD to SEA, Can you please help me for booking?

ASSISTANT: Yes, I will definitely try my best to help you in booking your flight ticket. Could you please provide your planned dates of journey?

USER: I would like to travel on 03/20 to return on 03/24.

ASSISTANT: Do you require any stopovers in your journey?

USER: I need a connecting flight.

ASSISTANT: Can you please resend your return date?

USER: Sure, my return dates is 03/22.

ASSISTANT: Would you let us know if you have any other preferences?

USER: I would be depart on evening.

ASSISTANT: Please share your name.

USER: Sarah Thompson here.

ASSISTANT: Sorry to say, no flights found with your requirement.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thanks for reaching us.