You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I amend you today?

USER: I am Catherine Perez. Can you please book me a ticket from DFW to EWR to meet my friends?

ASSISTANT: Sure, I am mirthful to help you.

USER: Thank you.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I need a connecting flight.

ASSISTANT: May I know when are you planning to travel?

USER: I would like to leave between 06/10 and 06/12.

ASSISTANT: Please wait for a while, I will search flight for you.

USER: Thank you so much.

ASSISTANT: Thank you for being patience. Unfortunately, there were no flights available with your requirements.

USER: Ok, no problem. Thank you so much.

ASSISTANT: Thank you for contacting us.