You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brenda Thompson.

ASSISTANT: How may I guide you?

USER: I would like to travel from LAX to EWR. Can you please help me to book a ticket?

ASSISTANT: Brenda Thompson, I am here to help you for this. When you are planning your trip?

USER: I want to start on Nov 17.

ASSISTANT: Is there any preference regarding your depart and return?

USER: I want to return in the evening.

ASSISTANT: Can you please share me your return date?

USER: I intend to return on Nov 19.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry for inconvenience, no flights are found with your information.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you very much for approaching our agency.