You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Linda Perez.

ASSISTANT: How can I aid you?

USER: Can you help me to book a flight ticket from OAK to EWR?

ASSISTANT: Sure, May I know your travelling dates?

USER: Ok, please can you book for the dates Aug 12 and 13th respectively?

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a direct flight.

ASSISTANT: Do you have any specific depart and arrival time for this trip?

USER: Ok, please can you book a flight whose arrival timing is during morning.

ASSISTANT: Thanks for your details, there are no flights found on your data.

USER: That is ok, thank you for assisting me.

ASSISTANT: Thank you.