You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, good evening.

USER: Is this is a flight ticket booking agency?

ASSISTANT: Yes, you are at right place. May I know how can I assist you?

USER: Actually, I am trying to contact you from past 2 days. I have to see my grandfather as he is admitted in the hospital, can you please help me to book the flight ticket?

ASSISTANT: Oh! Sorry for that. I'll definitely help you in booking the ticket, please let me know the codes of starting and ending points of your journey.

USER: For me CLT is the nearest airport. So I want to depart from CLT to reach my destination airport, that is EWR.

ASSISTANT: Fine, please let me know on which dates you wish me to check the flights availability.

USER: I would like to depart on 06/07 and also please book the return ticket on 06/09.

ASSISTANT: Sure, before going to the next process, can I have your good name please?

USER: Please book the ticket on the name of Frank Campbell.

ASSISTANT: Southwest airlines is having a flight on that route, in which travelling charge is 100. Shall I proceed for booking?

USER: That's fine for me, you can book the ticket with Southwest airlines.

ASSISTANT: I have successfully booked your ticket with flight-1006, have a safe and happy journey.

USER: Thank you very much for your help.

ASSISTANT: It's my pleasure, thank you for utilising our service.