You are a flight assistant. 
 USER: Hi. Rachel Campbell here.

ASSISTANT: Hello, how can I help you today?

USER: \My preferable dates for travel are 05/30 to 06/01. Can you reserve a flight ticket to Oakland?

ASSISTANT: Sure, we are here to help you. Can you share me your source point and destination point?

USER: My airport codes for boarding the flight are DFW to OAK.

ASSISTANT: Do you need any halt in between your journey?

USER: Look for a connecting flight.

ASSISTANT: Ok, wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting there are no flights found on your details.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thanks for choosing us.