You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I would like to book a ticket from PHL to IAD, can you help me?

ASSISTANT: May I know your travelling dates?

USER: My travel dates are Jan 27 and 29.

ASSISTANT: May I know your class limit?

USER: I want to travel in economy class.

ASSISTANT: Please let me know your journey timings?

USER: I want to depart in the morning.

ASSISTANT: May I know your name?

USER: I am Gregory Brown.

ASSISTANT: Sorry, no flights found on your route.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for connecting with us.