You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. how may I serve you at this moment?

USER: Nicholas Perez here. I want to book a flight ticket from OAK to DFW. Can you help me in that?

ASSISTANT: Sure, when would you like to make your journey?

USER: My trip dates are Apr 30 to May 2.

ASSISTANT: Do you prefer any class in your journey?

USER: I am comfortable with any class.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We found a Delta airlines, flight number 1006, and the fare of 100 in economy class with connecting flight. Shall I proceed?

USER: Can you please say depart time of my flight?

ASSISTANT: Your departure time is 7:00 AM.

USER: Don't proceed for booking.

ASSISTANT: Ok. Thank you  for choosing us.

USER: Thank you.