You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what help you are looking for?

USER: I would like to fly to BOS from IAD. Can you book a ticket for me?

ASSISTANT: Sure, for searching the flight on your given route, can I know your preferable dates to travel?

USER: I want to leave on 11/10 and return on 11/12.

ASSISTANT: Ok, I will check the availability on those dates and revert back to you, please give me a moment.

USER: Sure, take your time.

ASSISTANT: Happy to inform you that, Hawaiian airlines is providing service on your given dates with price 300, shall I book it?

USER: No, I would like to have a ticket worth of 200. Can you please check for that?

ASSISTANT: Sorry, I see there is no airlines providing service on those dates with price 200.

USER: That's really sad. Anyways, thank you for your help.

ASSISTANT: Sorry for inconvenience, before wrapping, can I know your good name for our reference?

USER: I'm Jennifer Rodriguez.

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

USER: You are welcome.