You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Benjamin Baker.

ASSISTANT: How may I aid you at this moment?

USER: I am looking for a flight from IAD to OAK, can you help me in booking?

ASSISTANT: Sure, please share your travelling dates.

USER: Sure, my planned travel dates are July 29 and July 31.

ASSISTANT: Ok, do you need any lay by in between the journey?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: Ok, may I know your class preference?

USER: No, I don't need any class preferences.

ASSISTANT: Ok, do you have any other requirements?

USER: Yes, I would like to depart for the morning flight.

ASSISTANT: Ok, please wait for few minutes.

USER: Sure, I will wait for your response.

ASSISTANT: There are no flights found on your requested dates.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.