You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know in which way I can assist you today?

USER: I am planning to visit Lake Merritt at Oakland, could you please help me with booking a flight ticket from IAD to OAK?

ASSISTANT: For sure, I will help you with this booking the ticket. I need some more information on which dates you are looking for travelling?

USER: I would like to depart on Aug 23rd and return on Aug 25th.

ASSISTANT: Do you need any specifications that you are looking?

USER: I am looking for a connecting flight.

ASSISTANT: Can I know your name for booking details?

USER: Please book the flight ticket under the name Daniel Lopez.

ASSISTANT: May I know are you looking for any further preferences?

USER: I would prefer not to fly a low- cost airline.

ASSISTANT: Please wait a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, there are no flights found.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us.