You are a flight assistant. 
 USER: Hi, myself Jessica Parker.

ASSISTANT: Hello. How may I help you?

USER: I want to meet my friend as he is unwell, can you please help me to book my flight ticket from PHX to BOS?

ASSISTANT: Sure, please mention your dates of travel.

USER: I would like to depart on 07/09 and return on 07/11.

ASSISTANT: Sorry, there is no flight for you on your preferable dates.

USER: Sad to hear that, thank you for the information.

ASSISTANT: Thanks for choosing us, have a good day.