You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Debra Anderson here.

ASSISTANT: How can I help you today?

USER: I would like to book a flight ticket from DCA to OAK, can you please help me out is there any flight available for me?

ASSISTANT: Sure, I can help you with that.

USER: Thank you.

ASSISTANT: Can you please mention your travel dates for booking flight ticket?

USER: Sure, I am planning to go on 09/18 and please book a return ticket on 09/20.

ASSISTANT: Ok, please wait a moment.

USER: Sure, take your time.

ASSISTANT: I have found a flight, connection limit of this airline is 1 and price is 200. Shall I proceed?

USER: Yes, I am ok with this, you can proceed with booking.

ASSISTANT: Your flight ticket is booked successfully, airline is Delta and flight number is 1023.

USER: Thank you for your assistance, have a good day.

ASSISTANT: Thank you for reaching us, happy journey.