You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you now?

USER: I want you to book my flight ticket from IAD to IAH, can you please do that for me?

ASSISTANT: Sure, I will help you with that. Can I have your travel dates please?

USER: Sure, I will start my journey on June 19th and return back on June 21st.

ASSISTANT: Ok, please let me know timings of your journey.

USER: I am fine at any time.

ASSISTANT: Do you have any other specifications to travel?

USER: Yes, I need a flight with single connection.

ASSISTANT: Can I have your good name please to proceed further?

USER: My name is Sarah Campbell.

ASSISTANT: Frontier airlines running a flight in your route with connection 1 and the ticket fare is 100 in economy class. Shall I proceed with booking?

USER: Yes, please book the ticket for me.

ASSISTANT: Ok Sarah Campbell, your ticket booking has done and the flight number is 1013.

USER: Thank you so much for your help.

ASSISTANT: Thank you for choosing us, have a great journey.