You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Susan Campbell.

ASSISTANT: How can I help you?

USER: I want to travel from EWR to OAK. Can you help me to book a flight ticket?

ASSISTANT: Sure, I am here to help you. Please share your travel dates.

USER: I want to travel in the flight on June 24 and June 26.

ASSISTANT: Do you need any connection in between the journey?

USER: I want to have a connection of 1.

ASSISTANT: Please share your class preference.

USER: I want to travel in economy class.

ASSISTANT: Do you have any other preferences?

USER: I want to return in evening time.

ASSISTANT: Wait a minute please.

USER: Ok.

ASSISTANT: Thank you for waiting, Sorry to inform you that we don't have any flight available on given dates from you.

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you for opting us, have a good day.