You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you at this moment?

USER: As I am a scientist, I want to attend science festival with my students at Boston. Can you help me to book a ticket?

ASSISTANT: Sure, can you please provide your airport codes of journey?

USER: My airport codes are MSP-BOS.

ASSISTANT: May I know your planned dates of journey please?

USER: My journey dates are 11/07 and 11/09.

ASSISTANT: Do you have any class preference for this trip?

USER: I am comfortable with any class.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: May I know your specific depart and arrival timings for this trip?

USER: My comfortable departure time is evening.

ASSISTANT: Do you have any connection limit for this trip?

USER: I need break in my journey.

ASSISTANT: May I know your good name please?

USER: Paul Gonzalez here.

ASSISTANT: Paul Gonzalez, there are no flight services are available on this route on your provided dates.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for contacting us.