You are a flight assistant. 
 USER: Hi, myself Timothy Mitchell.

ASSISTANT: Hello. How can I assist you Timothy Mitchell?

USER:  I want to book a ticket from OAK to ORD, can you help me?

ASSISTANT: Sure, can you please provide your travelling dates for a better search?

USER: My planned dates of journey are from 03/29 to 03/31.

ASSISTANT: As per your provided dates, there are no flights available on this route due to heavy bookings.

USER: Not an issue, thank you for checking.

ASSISTANT: Thank you for contacting us.