You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Ashley Lopez, can you help me to book a flight from EWR to DFW?

ASSISTANT: Sure, can you please share your travelling dates?

USER: My preferable journey dates are July 21 and 23.

ASSISTANT: Do you have any limits on number of connections?

USER: I need a connecting flight.

ASSISTANT: Do you have any specifications?

USER: I am planning to return at morning.

ASSISTANT: Sorry, there are no flights found based on your details,.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for choosing us.