You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you please book me a ticket from PHX to BOS to meet my family?

ASSISTANT: Sure, may I know your travel dates?

USER: I have planned to travel on Jan 18th and return on Jan 20th.

ASSISTANT: May I know your name please?

USER: Melissa Carter here.

ASSISTANT: Do you have any specifications? Sorry, there is no flight on your details.

USER: I like business class with connecting flight in normal cost airlines.

ASSISTANT: Sorry, there is no flight on your details.

USER: It's ok, thank you.

ASSISTANT: Thank you.