You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Virginia Walker here.

ASSISTANT: How can I help you at this moment?

USER: Me and my friend were planned a trip to Houston. The ticket is confirmed for my friend but due to some technical issues my ticket is not yet confirmed, so can you reserve a flight ticket again to me?

ASSISTANT: Sure, I am glad to help you with that.

USER: Thank you.

ASSISTANT: Could you please help me with your travel dates for further process?

USER: Sure, I am willing to travel on 04/16 and please book my return ticket on 04/18.

ASSISTANT: Can you please share your preferable airport code names?

USER: Sure, my nearest origin airport code is DCA and destination airport code is IAH.

ASSISTANT: Just give me a moment, I will check flight availability.

USER: Sure, take your time. Please bring a best flight for me.

ASSISTANT: There is a flight available in this route, airline is Spirit and flight number is 1015. Are you ok with this flight?

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

ASSISTANT: Your flight ticket is booked successfully.

USER: Thank you for your help in booking of my ticket, have a nice day.

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

USER: Most welcome.