You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Emma Collins here. I would like to book a ticket from SEA to OAK, can you please help me with that?

ASSISTANT: Yes, can you share me your travelling dates?

USER: The travel dates are from 06/21 to 06/23.

ASSISTANT: Give me a moment.

USER: Price limit should be 200.

ASSISTANT: Sorry, no flight found on your requested criteria.

USER: That's ok, thank you for your help.

ASSISTANT: Thank you for consulting us.